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Summary of Contents for Weaver WA-72B
- Page 1 WA-72B, WA-73B, WA-75B, & WA-85 OPERATION & SERVICE INSTRUCTIONS Weaver Jack Corporation 343 Lawrence Street Adrian, MI 49221 (517) 263-6500...
- Page 3 Weaver Jack Model Specifications MODEL CAPACI- FRONT SADDLE STYLE FRAME JACK WHEELS AND SIZE LENGTH WEIGHT WA-72B 2 TONS 2 WHEELS - TRIANGULAR OR 51” 136 LBS 4’” DIAMETER ROUND 5” TO 6” WA-73B 4 TONS 2 WHEELS - TRIANGULAR OR 58”...
- Page 4 Assembly of a New Weaver Jack 1. Check the handle set screw for tightness. 2. On the WA-85 only: Remove and discard the vent filler plug. This is very im- portant, as the vent hole must always be kept open so the jack can “breathe”.
- Page 5 Operation of a Weaver Jack WARNING! Always use stands to support the vehicle before attempting under- vehicle repairs or inspections. Always follow OSHA Workplace Safety Standards. 1. Use the jacks on a smooth, hard, level surface only. Use the jack as a lifting de- vice only.
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Page 6: Overload Protection
Refilling the Jack with Oil Remove the filler plug and with the saddle down, put in AW-32 Light Hydraulic Oil (or an oil that meets MIL-F-17111 011 specifications) until the level comes up to within 1/4” to 3/8” below the filler hole. Overfilling will cause oil to squirt out of the vent hole as the jack is lowered, or ... -
Page 7: Preventative Maintenance
Safety Precautions Follow OSHA Standards and ASME PALD Part 10 Instructions. Never exceed the jack’s rated load capacity. Only lift vehicles at the recommended lift points found in the vehicle’s service manual. Eye protection should be worn per OSHA recommendations. ... - Page 8 Relieve When Air-Bound If the oil supply runs too low, the jack may become air-bound and work on only a half stroke of the handle. Fill the jack with oil, raise the saddle, and then using the release lever (lowering ...
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Page 9: Troubleshooting
Troubleshooting ISSUE CORRECTIVE ACTION Saddle will not raise: 1. Check the oil level. 2. Perform the ball valve test. Oil spurts out of the vent hole: 1. The jack is overfilled with oil. Jack will only lift part of the way up: 1. It may be low on oil; check and refill. Jack will not lift load: 1. - Page 11 Ball Valve Test 1. If the jack will not raise at all, the ball valve may be obstructed by debris. 2. Open the release valve and keep it open. 3. Raise the saddle lift arm manually to full height. 4. Lower the saddle by pushing it all the way down (this will flush out any debris in the ball seats).
- Page 13 Release Group Needle Valve Adjustment In the release group assembly, the spring governs the load that the jack will lift. When the pressure within the cylinder overcomes the spring tension, the release valve floats off the seat. It is imperative that the release valve floats freely in the release group assembly.
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