Tip & How-To about 1987 Jeep Wrangler
Here's a step by step to remove and replace the water pump on your Wrangler.
Be advised, all 4.0L engines, some 2.8L engines and some 4.2L engines have a reverse rotating water pump. You can ID these from the word REVERSE or REV imprinted or cast on the housing and/or fan. There will also be an 'R' stamped into the impellor.
Make sure your replacement pump is the correct type, If not, expect some major turmoil.
1. Remove negative battery cable
2. Open radiator valve - drain cooling system
3. Remove cooling fan and shroud
4. Remove belts (see my tip on serpentine belts if needed)
5. Remove water pump pulley from hub
6. Remove hoses from water pump
7. Remove accessory brackets from the water pump.
When removing the P/S pump and/or AC compressor, leave the hoses attached and move them out of the way.
8 . Remove the remaining bolts and detach the water pump from the engine. The bolts are three different lengths. Make note of where they came from.
9. Compare the new and old pumps. Make sure they match.
10. Scrape off the old gasket material.
11. Apply a thin continuous line of RTV High Temp sealant to the water pump side of the gasket.
12. Put a couple bolts through the pump to hold the gasket in place and mount the gasket.
13. Apply Another coat to the other side of the gasket.
14. Attach the pump to the engine. Screw the bolts in finger tight.
15. Attach the remaining bolts.
16. Tighten them up in 1/4 turn increments.
17. Re-attach all the stuff you removed
18. Refill the coolant, adjust belt tension.
19. Run the engine and check for leaks.
Hope this helps
Posted by Justin... on
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