Looking for Knuckle Torque Specs for 1977 With Disc Brakes

Joined
May 9, 2021
Messages
903
Location
Texas Coast
Getting ready for the rite of passage first knuckle job... Parts have all been ordered and are inbound. Vehicle is a 1970 40 series with a 1977 front axle with disc brakes. I have the 1970 FSM and downloaded a 1975 FSM. Those are both for drum brakes. But I'm trying to figure out if torque specs or preloads changed on the disc brake axle. Does anyone have a disc brake FSM that they scan the torque & preload specs? (Perhaps a 1978 FSM?)
Thanks.
 
Joined
Jan 5, 2017
Messages
4,171
Location
Charlotte, NC & Alexandria, VA
Toyota published (number 98154) a combined body and chassis manual covering 1975-1980. You want to pick one up (ISBN 13: 978-1522939245, ISBN-10: 1522939245)

I haven't scanned mine, but here's what you need, in order of assembly.
drum & disc:
Trunnion (cap) bolts: 43-54.3 ft-lbs
Trunnion bearing preload (as measured with the spring scale (3.9-5.0 lbs
Steering knuckle retaining botls: 10.9-16.0 ft-lbs, then secure with lock wire
disc only:
Disc to Hub bolts: 28.9-39.8 ft-lbs
Bearing (inner) locknut: 43 ft-lbs, rotate hub back and forth 3 times, retighten to 43 ft-lbs, the unscrew 1/8-1/5 turn
Bearing (outer) locknut : 58-72 ft-lbs
Drive flange nuts (over cone washer): 20.3-25.3 ft-lbs
 
Last edited:
Joined
May 9, 2021
Messages
903
Location
Texas Coast
Toyota published (number 98154) a combined body and chassis manual covering 1975-1980. You want to pick one up (ISBN 13: 978-1522939245, ISBN-10: 1522939245)

I haven't scanned mine, but here's what you need, in order of assembly.
drum & disc:
Steering knuckle retaining botls: 10.9-16.0 ft-lbs, then secure with lock wire
Trunnion (cap) bolts: 43-54.3 ft-lbs
Trunnion bearing preload (as measured with the spring scale (3.9-5.0 lbs
disc only:
Disc to Hub bolts: 28.9-39.8 ft-lbs
Bearing (inner) locknut: 43 ft-lbs, rotate hub back and forth 3 times, retighten to 43 ft-lbs, the unscrew 1/8-1/5 turn
Bearing (outer) locknut : 58-72 ft-lbs
Drive flange nuts (over cone washer): 20.3-25.3 ft-lbs
@Malleus thanks! I just ordered the 75-80 FSM as suggested. I really appreciate the nudge.
 

Users who are viewing this thread

Top Bottom