88T4R

is there a torque spec for the water pump on a 88 22re, the bolts that secure it to the timing cover. I have searched my FSM, Haynes manual and here. Don't know if there is an actual spec or just tight?

drew303

its in the haynes manual, 12 ft/lbs but uh, just tight enough is more helpful. I tried to torque to 12 and broke the bolt so um, remember it doesnt need to be super tight and your screwing into aluminum with some weak bolts.

they break off easily.

4Crawler

iTrader: (3)

The FSM will have the torque specs in the back, Appendix B. That is where all fastener torques are listed for bolts that have no specific torque listed. Will vary by bolt size and grade.

88T4R

ok thanks for the help, I didn't think to look there!

skjos

The water pump nuts and bolts are not called out with a direct torque specification, therefore it defers to the standard bolt specifications in the introduction section of the FSM (IN-18-19). The markings on the bolt and the use of a washer classify them as 6T hexagon flange bolt. With this information the toque table indicates the 6mm bolts (and nuts) should be torqued to 78in-lb (6.5ft-lb) and the one 8mm bolt should be torqued to 180in-lb (15ft-lb). Note that the long 8mm bolt engages steel not aluminum.

If you are replacing the thermostat, the torque called out on page EG-234 is 14ft-lb; however the same bolts are covered on page EG-236 with a torque callout of 9ft-lb.

There could be a screw up in the FSM, where the callout on page EG-234 (14ft-lb) is for the thermostat bolts, and the callout on page EG-236 (9ft-lb) is for the water pump bolts.

Note: This information is from the 1994 Pickup FSM.

It should also be noted that any lubrication on the bolts or in the bolt hole (including coolant) can affect the torque value. Generally torque should be reduced 20% when the bolts are lubricated.
http://www.popularmechanics.com/cars...unt-of-force-2

I found this graphic on the web, it specifies 6ft-lbs for the 6mm bolts and 9ft-lbs for the 8mm bolt:

http://www.skjos.net/toyota/images/t...ver-torque.jpg

So take your pick at which torque to use, but the 6mm bolts should be no greater than 9ft-lbs and the 8mm bolt no greater than 15ft-lbs.

Zachrey

My water pump pulley wrecked several bolt heads on my water pump so I had to buy some at the hardware store. I got zinc plated bolts. I got them on no problem, but should I replace them? If so, what should I replace them with?

Thanks!

13Swords

LCE Flyer on Bolt Specs & Torque Specs for 1985 to 1995 22R & 22RE Water Pump & Timing Cover: http://www.lcengineering.com/LCInstr...ware%20Kit.pdf