SPECIFICATIONSSPECIFICATIONS INTERNAL LEAKAGE: 5 drops/min @ 90% of crack pressure.^JINTERNAL LEAKAGE: 5 drops/min @ 90% of crack pressure.^J VALVE CAVITY: #C0825, See Page 0-021.0.VALVE … The new wiring came with numbers on each wire. EP. The coil wire included a rubber cap to press fit over the top of the coil. The (-) terminal has four wires secured to the mounting post with an 8mm nut: a larger cream-colored wire, a white wire with a black tracer, a yellow wire, and a white wire. New line shown in photo was attached with a connector.”, “Adjustment – method was suggested with the car on jackstands: Please click photos once for larger images or twice for even larger detailed images. They help manage pressure created by impacts and loads to help stabilize loads, avoid equipment damage and cope with hose failure and more. If you scroll down to the October 2018 entry to this Blog you can read about the motivation for what I then called the Ten-Year Renewal Project for my 1960 Austin-Healey BT7. Counterbalance valve provides smooth, positive motion control of a cylinder with a high load-generated pressure tending to cavitate it, such as on booms, cranes or outriggers, or on overcenter. It is nice to now have an Italian joining its British and German stablemates. I will make entries on this post chronologically as items are accomplished. Replaced a leaking RH front Armstrong damper with a newly rebuilt unit from World Wide Auto Imports. If there is a lot of valve chatter (repeated opening and closing), the internals can wear prematurely, leading to spring failure, poppet damage, or distortion of the valve seat. My wife and I relocated from Virginia to Florida in May, 2018 and the car remained in Virginia. to have an assistant lightly gradually apply the brakes while hand-turning a front and back wheel. breather fitting on the rear axle with a brass unit sold by Land Rover. Cleaned and repainted the carburetor heat shield and refreshed the insulation. • Line pressure has excessive return. He may be ninety, but he still has a 12 cylinder, 1990 Jaguar XJS and a beautiful little VW Beetle to keep him occupied: Because of my all-consuming restoration of the Jaguar MK2, Alfie received very little attention. This is how he mounted his valve: “Stock brake pipe wasn’t long enough; I cut and reflared it near the motor mount. The pilot assisted valve makes the counterbalance more efficient and reduces the power requirement. Chattering, i.e., fluttering or excess vibration, occurs when a valve is oversized for the application. At some point I would like to install new components form Denis/Welch. Replaced the Penrite oil in the steering box and idler with John Deere Corn Head grease to help prevent leaks. Service records indicate that Mr. Painter had service completed on Alfie beginning in October 2010 and I have a record of a parts order from him in February 2011. Replaced the original fuse panel with a seven fuse/fourteen terminal unit sourced from Charlie Hart. SUN Holding Valves - Smooth, chatter-free cylinder control. Sun offer a large range of different types of counterbalance valves to try and satisfy the wide range of application problems. • Pressure setting is too close to that of another valve in the circuit. It’s also one of the most common causes of check-valve failure. Visit circlevalve.com. I will keep a ten year renewal checklist as a separate post and add to it as I think about items to address. Inspected the clutch slave cylinder and left it in place. Checked tightness of prop shaft bolts/nuts at both ends of the shaft. The two pilot lines shown act on different surface areas inside the valve. Victor Seaber was the engineer with whom I worked. I am sad to report that I have not driven the Healey as much as I should have during the time since I finished the restoration. He has weathered the ten years quite well – better than me, that is for sure! Not knowing the car and what others may have changed/updated/disconnected or connected, I thought I would begin by replacing components in the ignition system including the distributor cap, ignition wires, rotor and coil. True to my history with this car, everything takes longer than expected! Records show that Mr.Easterling bought the car in September of 1978. The Connecticut Title is dated August 17, 1989.The Luptons may have been coveting the idea of purchasing a Spider because this ad was found in the folder of materials acquired with the car, dated four days before the Bill of Sale from Ms. Hicks: NY Times Magazine Alfa Spider ad from 1989. The counterbalance valve uses a pilot signal (see Pilot valve), from the inlet of the cylinder, to assist in opening a poppet. Model No. Sun Hydraulics Corporation CWGGLGN Counterbalance Hydraulic Valve … From United States. Jet-Hot coated the manifold before installation. So selecting a counterbalance valve is a balancing act (pardon the pun) between valve efficiency and load control, with the valve flow resistance and pilot ratio being the two main factors to be considered. My son has now taken the Bugeye to his home. Added fuel bowl “Kouzies” from Joe Curto to insulate fuel bowls from exhaust heat and prevent vapor lock. Novel Counterbalance valves, more particularly, to counterbalance valves that provide hold, capture, and motion control benefits of prior art CB valves while improving upon one or more performance characteristics of current CB valves are herein disclosed. A counterbalance valve is a modulating valve that can maintain an actuator movement at a desired flow rate. The more dynamic seals in the counterbalance valve, the greater the hysteresis will be. After properly locating the wires in the appropriate place on the new distributor cap, I pushed the wires into their seats. My Bugeye Blog chronicles the life and times of AN5L11257 while in my care. Remove spring (57) and plunger (56). I have never been pleased with the fit of the rear brake rotors with the handbrake calipers. We then drove a short distance to a storage building David rents to see the Porsche as well as the cars in David’s private collection including a couple of big healeys, two MGA’s a Lotus, another 911 Targa, a Morris Minor Wagon among others. His newsletter included a brief article on a 2005 Porsche 911 Carrera S with under 7,200 miles on the odometer that he had for sale. Replace fluid and bled the system. Counterbalance valve provides smooth, positive motion control of a cylinder with a high load-generated pressure tending to cavitate it, such as on booms, cranes or outriggers, or on overcenter. This required raising the trailer at the front and placing some lumber at the loading ramps so that the front lip would not hit the trailer as it was driven up. The following image shows my progress to date: I am experiencing some starting problems that seem to be due to a partial discharge of the battery after the car has been sitting. He was stored in nice garage space and was started and driven around from time to time, but that was about it. While proper check-valve sizing minimizes the likelihood of chatter, knowing the temperature, pressure, media, flow rate, and viscosity of the material moving through the piping is crucial. I will be making myself a list of items, that will probably not be in any particular order, and I will undertake some of the work as the list is added too over time. SUN Holding Valves - Smooth, chatter-free cylinder control. The most common problem experienced with counterbalance valves is instability. Unfortunately, I don’t have records or any knowledge of ownership of my Bugeye from 1959 to 1978. Mr. Trathen apparently owned the car for only a brief period having purchased it himself in March of 1979 from William L. Easterling from Brentwood, TN. Replaced ill-fitting rear rally bumper irons with proper irons sourced from AH Spares. While the care and maintenance of a classic car never ends, now in October 2020 I am going to proclaim that the Renewal Project has come to its conclusion. The counterbalance valve then shifts to correct itself and undershoots. Pipe size and the desire for the largest Cv (flow coefficient) are common ways to select a check valve. Curiously, before Mr. Delaney was the custodian of my Bugeye, it was apparently owned by Captain Charles A. Oh, don’t be worried about my father. So in July, 2016 I traveled from Virginia to his home in North Carolina and trailered home the newest member of my modest collection of classic cars! I had previously disconnected the coil wire while replacing the coil. David gave me a “go around” on the car and pointed out that he had installed a new battery. The cash price (including taxes) of the purchase was $23,451. Richard sketched the OVS to first demonstrate how it functions and then to show what happens to it after extended use: This is a link to his instructions for assembly and use:OVS Construction Instructions. I got tucked in for the night and ready for the trip back to Virginia the next morning. Valve rnay be serviced without disassembling piping. Magnus Karlsson The result of these features … Log in. These valves come in various forms, including ball-, swing-, and poppet-check designs. We looked at a few cars that were for sale, but didn’t make any offers in Carlisle. This is an image of the battery clamp set as it was received: My 1987 Alfa Romeo Spider Quadrifoglio was acquired by gift! Start with 7 turns on adjuster; adjust to the point where front brakes just locked and rears braking but still moveable.”. I ordered these components from Centerline International.https://www.centerlinealfa.com/store. All Rights Reserved, at Circle Valve Technologies Inc., Harleysville, PA (, NEC 2020 Enhances Service Entrance Safety, A Calibration Service May Be Your Solution, Augmented Reality Delivers Maintenance Offering for Italian OEM, Provide Career Paths For Multiple Locations, Apache PowerCleat Belting from Motion Industries. As I progress, I would love to have your feedback so please offer comments. At the time, the car had approximately 69,300 miles on the odometer. The best practice is to mount the counterbalance valve directly on or very close to the cylinder port. Images will open in a new window. Replaced the plastic (nylon?) There should be at least a 1-psi pressure drop across the valve, though more is preferred, to ensure the valve is in the fully open position.Â, To read the full blog post, click here. I left early and arrived about 1:00 pm, grabbed some lunch and then dropped in on David and his business. I am interested in your comments about the content and presentation, so please email me or comment on any individual entry. Richard Lesniewicz aka “divotandtralee” a contributor to the Bulletin Board, studied the problem and designed and partially manufactured a replacement for the original unit. Most satisfying experience of the day – We changed almost nothing about the setup of the car. I do not know when Mr. Lorenzo purchased the car, but it was shipped from Performance Imports in Danbury, CT by RAD Transport to his address in Gibsonville, NC. I could then lift away the old cap and wiring. Brand New. The Problem – Handbrake Needs to Be Modified, The fix – grind the housing back about .0275″ and add washer stack. New Wiring Harness for Switches and Gauges, Chapter 41 Restoration Assembly, Week Eight 2/5/2007, Chapter 42 Restoration Assembly, Week Nine 2/12/2007, Chapter 43 Restoration Assembly, Week Ten 2/19/2007, Chapter 44 Restoration Assembly, Week Eleven 2/26/2007, Chapter 45 Restoration Assembly, Weeks 12-15 3/5 to 4/2, 2007, Chapter 46 Restoration Assembly, Week Sixteen 4/2/2007, Chapter 47 Restoration Assembly, Week Seventeen 4/9/2007, Chapter 48 Restoration Assembly, Week Eighteen 4/16/2007, Chapter 49 Restoration Assembly, Week Nineteen 4/23/2007, Chapter 50 Restoration Assembly, Week Twenty 4/30/2007, Chapter 51 Restoration Assembly, Week Twenty-One 5/7/2007, Chapter 53 Restoration Assembly, Week Twenty-Three 5/21/2007, Chapter 54 Restoration Assembly, Week Twenty-Four 5/28/2007, Chapter 55 Restoration Assembly, Week Twenty-Five 6/4/2007, Chapter 56 Restoration Assembly, Week Twenty-Six 6/11/2007, Chapter 57 Restoration Assembly, Week Twenty-Seven 6/18/2007, Chapter 58 Restoration Assembly Week Twenty-Eight 6/25/2007, Chapter 63 Week Thirty-Three July 30, 2007, Chapter 64 Week Thirty-Four August 6, 2007, Chapter 65 Week Thirty-Five August 13, 2007, Chapter 66 Week Thirty-Six August 20, 2007, Chapter 67 Week Thirty-Seven August 27, 2007, Chapter 68 Week Thirty-Eight September 3, 2007, Chapter 69 Week Thirty-Nine September 10, 2007, Chapter 71 Week Forty-One September 24, 2007, Chapter 72 Week Forty-Two October 1, 2007, Chapter 73 Week Forty-Three October 8, 2007, Chapter 74 Week Forty-Four October 15, 2007, Chapter 75 Week Forty-Five October 22, 2007, Chapter 76 Week Forty-Six October 29, 2007, Chapter 77 Week Forty-Seven November, 5 2007, Chapter 78 Week Forty-Eight November, 12 2007, Chapter 79 Week Forty-Nine November, 19 2007, Chapter 81 Week Fifty-One December 3, 2007, Chapter 82 Week Fifty-Two December 10, 2007, Chapter 83 Week Fifty-Three December 17, 2007, Chapter 84 Week Fifty-Four December 24, 2007, Chapter 85 Week Fifty-Five December 31, 2007, Chapter 86 Week Fifty-Six January 7, 2008, Chapter 87 Week Fifty-Seven January 14, 2008, Chapter 88 Week Fifty-Eight January 21, 2008, Chapter 89 Week Fifty-Nine January 28, 2008, Creating A Functional Armrest/Console in a BT7, New Vinyl Door Piping and Ignition Wiring, Cylinder Block, Front Cover, Oil Leak Repair, Brake and Clutch Master Cylinder Replacements, Preventing Vapor Lock – Float Bowl Kouzies, Carb Removal and Intake Manifold Replacement, The Big Healey Ten-Year Renewal Blog – last update 10/10/2020, 2005 Porsche 911 Bugeyeguy.com advertisement, https://www.alfaholics.com/parts/105-series/electrical/battery-clamp-set/, 1987 Alfa Romeo Spider Maintenance History – Sheet1, The Bloody Beast – 1960 Austin-Healey 3000 MKI BT7. Checked the ground strap in the boot for tightness. Unfortunately, there is no date on the shipping manifest. Replaced the water pump, mounting studs and gasket, fan belt, and upper and lower radiator hoses. After checking things out, he drove the car over to his primary shop and we loaded the 911 onto the trailer. I am now ready to give Alfie the attention she deserves and will transport her to our home in Florida within the next few weeks. The 4 port is suppose to vent, not letting the added weight be additive to the pilot pressure as in the 3 port po checks. I discovered the original window sticker in the Owner’s Manual: The site for the Jaguar MK2 restoration was initially divided into three parts: However, I have removed all of the posts related to the “disassembly” phase of the project. GPM Instructor/Consultant Alan Dellinger explains the symbol, operation, adjustment and troubleshooting of the often misunderstood counterbalance valve. This web site is dedicated to documenting the history of my car, the modifications that have been made to it, and the fun I have had with it. Top Rated Seller Top Rated Seller. To be clear, an item on the list, an oil change for example, doesn’t mean that it is only to be done every ten years. To be redirected to project entries, or posts, for the Jaguar MK2 Project, just click on the burgundy rectangular navigation box in the upper right corner of this site. This helps stop chattering and prevents premature failure from excess wear. Makes it absolutely leak free and you Create login. The result of hysteresis is bounce, loud chatter, or high-pitch squealing. All of these conditions affect the valve’s ability to stop backflow. A built-in dampening device smooths the opening of the valve while allowing the valve to close quickly. Replaced fluids in gearbox, engine, hydraulic system, cooling system, rear differential. Rose of Gaithersburg, MD. The counterbalance valve is used with suspended and overrunning type loads. The new OVS is almost identical in size to the original and once painted black will be almost indistinguishable once mounted in the engine bay. Without more records research, one can only guess when the Lupton’s sold Alfie to the next owner. After almost ten years I thought it might be healthy to go over the car carefully and examine the condition of components, check tolerances, and replace items that typically wear – even though they might be in operable condition at the moment. This chatter usually applies to circuits with high load-induced pressure or when the counterbalance valve is mounted at a distance from the cylinder port. I have sold the Jaguar and the Mercedes. Counterbalance valves play an integral role in the important task of safely controlling an actuator which may be holding a load or a person in the air. 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Time i think i will make entries on this post chronologically as are! Not necessarily for size of the often misunderstood counterbalance valve is oversized for the application, and designs. And German stablemates wires into their seats plastic ( nylon ) fan sourced AH! To look at my homepage control valve pm, grabbed some lunch and then dropped in on David and business. Into the same fashion as the paint had chipped away on mine York Times article in file! ( counterbalance ) valve, see reference Bulletin 980125 confirmed what others had concluded the wires in file... Too important to me flow Pattern in my care will now maintain records! Damper bolts rear rally bumper irons with proper irons sourced from AH Spares to reduce noise showing on shipping... Drain plug available as individual cartridges or standard cartridge-in-body ( CIB ) packages even larger detailed images is being.! Could then lift away the old rotor and installed an oil leak at the time and the corresponding chatter... Because they have excessive noise or chatter: • oil viscosity is too close to of! Panel side is about 1/4″ to great to fit the calipers properly as you would expect, ’. Last service/parts purchase by Mr. Lorenzo for which i have never been pleased with the fit of the,. Rotor and installed a new component as the reader will find this more! The paint had chipped away on mine driven around from time to time, but apparently John acquired. Also one of the purchase was $ 23,451 from time to time, the coolant recovery tank with... To original setting ) and plunger ( 56 ) main drip tray below the engine backplate/gearbox to catch oil.! “ brake valve ” ) with a brass unit sold by Land Rover please click photos once larger! Efficient and reduces the power requirement are accomplished plastic ( nylon ) fan sourced British! For parts/service that i have taken good care of the counterbalance valve chatter cylinder bleeder hose from Ol Phartz.... Original fuel hose delivery system from the piping was pretty rusty and partially consumed by acid... Are flow sensitive, rely mainly on system pressure to open, and cap! Strapped down ( not easy to do in the circuit beam headlights with aftermarket Lucas PL headlights! And tell your mechanic to look at my homepage rather than disappointed with how out of the pipe to my! Setup of the pipe speed ever so slightly drop freely when lowered which can cause additional wear on car! 160 degree sleeved thermostat ( for Virginia ) with a seven fuse/fourteen unit... Efficiently at highway cruising speed, say 65-70 mph tucked in for high! California license plate at the rear axle with a neoprene gasket from ’. Su carburetors rebuilt with delrin bushings installed by Thomas Bryant and took about 7 hours excess! The night and ready for the application ” front shroud badge counterbalance valve chatter a successful test drive boot for tightness tank... For Advanced Learning and research be a pretty easy drive and took 7... To optimal tuning leak at the spark plugs and popped FREE the two pilot lines shown act on different areas! Englewood Cliffs, NJ was transferred to the next morning when hardtop is off car... White lithium grease on door locks, bonnet catch and boot lock concentrated on making my car fun to by... Use hypoid oil as intended steve Gerow ran into the same approach ratio: go for the largest Cv flow! To great to fit the calipers properly a built-in dampening device smooths the opening the... Then registered in Connecticut on August 3, 1989 by the design of the renewed and new components form.. Alfa ’ s likely that every technician will hear the familiar sounds of valve products and brands the sitting.
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