CRANKSHAFT DAMPER BOLTS NEED TO BE RETIGHTENED ON CERTAIN D10N TRACTORS, 992C LOADERS, 773B TRUCKS, 3408, 3412 MARINE ENGINES - M AILED WORLDWIDE EXCEPT BRAZIL. Caterpillar

U-45
A-26
AU-32
E-25
O-30
PRIORITY
1205  PI3299
COMPLETION DATE  

September 30, 1988 March 31, 1989

The bolts which hold the damper to the crankshaft adapter on
certain D10N Tractors, 992C Loaders, 773B Trucks and 3408 and
3412 Marine Engines may have been improperly tightened.
The bolts need to be tightened to the correct torque.

Model Identification Number
D10N 2YD380 - 436, 442, 445
992C 49Z1089 - 1122, 1124
773B 63W2087 - 2097, 2099, 2102-2109, 2111-2138,
2141-2164, 2167, 2168-2170, 2172, 2178
3408 99U5610 - 5769
3412 60M3165 - 3307

none

Tighten the 12-S1585 Bolts that hold the crankshaft damper to
the crankshaft adapter to 135 +- 15 N.m (100 +- 10 lb ft)

U.S. and Canadian owners will receive the attached Owner
Notification.

Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs.
(D/N) (Sell)  (C/L) (Sell)
- 2 0 0 0 0
NOTE: This is a 2-hour job.

not applicable
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
Attach. (1-Owner Notification)
COPY OF 

 FOR U.S. AND CANADIAN OWNERS
XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999
PRIORITY - Bolts Which Hold Damper To Crankshaft Adapter Need
To Be Retightened
MODELS INVOLVED - D10N Tractors, 992C Loaders, 773B
Trucks, 3408 And 3412 Marine Engines
Dear Caterpillar Product Owner:
The bolts which hold the damper to the crankshaft adapter on
the products listed below may have been improperly tightened.
The repair will be done at no cost to you.
Contact your local Caterpillar dealer immediately and schedule
a time to have this service performed. The repair time for
this service is approximately two hours.
We regret the inconvenience this may cause you, but urge you to
have this service performed as soon as possible to prevent
unscheduled downtime.
Caterpillar
Identification #(s)
Attached to March 20, 1988 Service Letter