Post by
MinisterofDOOM »
https://forums.nicoclub.com/ministerofdoom-u16506.html
Wed Aug 09, 2006 12:44 pm
The picture below shows the location of both water pump and thermostat. The thermostat comes out from the engine a bit at an angle. To get to the water pump, you'll need to remove the timing access cover shown in the illustration, and remove the timing guide for that side. To get to the timing cover, you'll need to remove the drive belt, as well as the idler pulley bracket.I'm not sure exactly what is involved in replacing the t-stat, but from the illustrations and directions in the FSM, it looks like you will NOT need to remove any timing covers, guides, or chains. You will want to be careful with coolant--don't get it on the drive belts.
Also, the service manual recommends revving the engine to 3000 under no load after removing and replacing the water pump/timing cover in order to purge any air from the chamber. After replacing the cover, you may hear rattling until the air has been purged.
Procedure for replacement of water pump is:
-Drain coolant from radiator and both sides of cylinder block-remove drain plug (just below the timing/pump cover)-remove right side engine mounting, mounting brackets, and nuts-Remove Drive belt and idler pulley assembly-remove timing/pump cover-remove timing chain tensioner-remove water pump