Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1985ASTRO VAN M L4-151 2.5LREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSP/S - SUBMERGED STYLE PUMP "O" RING CHANGE
1985 Chevrolet Astro Van M L4-151 2.5L
P/S - Submerged Style Pump "O" Ring Change
1985 Chevrolet Astro Van M L4-151 2.5LSECTION P/S - Submerged Style Pump "O" Ring Change
85-41
UPC 3B(IX)
FEB., 1985
Subject: POWER STEERING SUBMERGED STYLE PUMP "O" RING CHANGE
Model and Year: 1985 MODELS
TO: ALL CHEVROLET DEALERS
Power steering pumps on some 1985 models have revised "square cut" seals which provides the seal between the reservoir and the housing at the reservoir mounting bolt hole(s) and at the pressure line fitting. This change is effective with early 1985 production on all submerged pump assemblies.
The new seal is approximately twice as thick as the old one and requires a deeper counterbore in the housing. Consequently, new seals will not fit the old housings and old seals will not provide an adequate repair when used with the new housing. The new housing will be the only one provided for service from WDDGM. Both old and new seals will be provided in each appropriate reservoir kit and in a new seal service kit, part No. 7848522 which will replace the present kit, part No. 5688044.
These kits will contain an instruction sheet which shows the method of identifying the new housing, and shows the difference between the new and old seal. (See Illustration)
There has been a design change in the hydraulic pump housing. Look at the mounting pad shown. If the mounting pad shows a stamped "X" use the three thicker square cut O-ring seals provided in this kit.
UPC 3B(IX)
FEB., 1985
Subject: POWER STEERING SUBMERGED STYLE PUMP "O" RING CHANGE
Model and Year: 1985 MODELS
TO: ALL CHEVROLET DEALERS
SEAL SELECTION:
Power steering pumps on some 1985 models have revised "square cut" seals which provides the seal between the reservoir and the housing at the reservoir mounting bolt hole(s) and at the pressure line fitting. This change is effective with early 1985 production on all submerged pump assemblies.
The new seal is approximately twice as thick as the old one and requires a deeper counterbore in the housing. Consequently, new seals will not fit the old housings and old seals will not provide an adequate repair when used with the new housing. The new housing will be the only one provided for service from WDDGM. Both old and new seals will be provided in each appropriate reservoir kit and in a new seal service kit, part No. 7848522 which will replace the present kit, part No. 5688044.
These kits will contain an instruction sheet which shows the method of identifying the new housing, and shows the difference between the new and old seal. (See Illustration)
There has been a design change in the hydraulic pump housing. Look at the mounting pad shown. If the mounting pad shows a stamped "X" use the three thicker square cut O-ring seals provided in this kit.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.