PSP FOR FUEL TRANSFER PUMP VALVES; 3406B TRUCK,MARINE, INDUSTRIAL, GEN SET ENGINES; 16G MOTOR GRADERS; 245 EXCAVATORS & F RONT SHOVELS; 824C TRACTORS, 825C, 826C COMPACTORS; 980C LOADERS - PS4021 - MAILED US, CANADA, CFEL AND COSA Caterpillar

PRODUCT SUPPORT PROGRAM FOR FUEL TRANSFER PUMP VALVES; 3406B TRUCK, MARINE,
INDUSTRIAL, GENERATOR SET ENGINES; 16G MOTOR GRADERS; 245 EXCAVATORS AND FRONT
SHOVELS; 824C TRACTORS, 825C, 826C COMPACTORS; 980C LOADERS, 1256, PS4021
U-81
C-65
E-55
O-52
NOTE: This Program can be administered either before or after a failure. In
either case the decision whether to apply the Program is made by the dealer.
When reporting the repair, use "PS4021" as Part Number and "7755" as Group
Number.
Although products in the field are to be administered as described above,
dealers should purge parts stock immediately.
A Service Letter similar to this one has been sent to all TEPS Dealers.

October 31, 1986.

The fuel transfer pump on the above engines has three 1W6182 or 7W402 Valve
Assemblies. The one valve in the piston can break in extremely cold weather.
Some damage can also occur to the other valve assemblies. This problem has
been reported mainly in cold weather applications.
A new valve with improved cold temperature capability is now used in the piston
and at the other two locations in the pump. These valves are directly
adaptable to earlier engines.

NOTE: Some of the following vehicles contain the 3406 Engine with the former
scroll fuel system and are not in this Program.
Model Identification/Serial Number
3406B Truck Engine 7FB1-41754
3406B Marine Engine 4TB1-641
3406B Industrial Engine 6TB1-2539
3406B Generator Set 2WB1-2692
16G Motor Grader 93U2284-2523
245 Excavator 95V1084-1193
94L525-751
245 Front Shovel 82X618-633
84X686-857
621B Tractor 2GB124
45P3521-3827
623B Tractor 46P1957, 1971-2198
627B Tractor 14S1188, 1191, 1212, 1220, 1237,
1252, 1253, 1267, 1277
15S1729
824C Tractor 85X958-1174
825C Compactor  86X634-730
826C Compactor  87X338-559
980C Loader  63X4923-6349
2EB367-379
13B373-588

1 - 7C396 Spacer 1 - 6J2419 Seal
1 - 3D2824 Seal 1 - 5P8215 Seal
1 - 3D2898 Seal 3 - 7W8412 Valve As.
1 - 6F6672 Seal
1 - 4J8997 Seal

Remove all 1W6182 or 7W402 Valve Assemblies from parts stocks. Do not use any
former 4W6908 Seals or 7W801 Spacers in 3406B Engine applications.
To prepare for this Program, dealers should first rebuild a few transfer pumps
to be used as exchange pumps. Install a transfer pump that has all the new
parts on the affected product. It is recommended that this repair be made
before failure on engines expected to operate in temperatures below -12 deg. C
(10 deg. F). Engines operating in temperatures above this are unlikely to
fail. Be sure to use the 7C396 Spacer (Blue) with the new valve. The new
valve is thinner and requires the new, thicker spacer.
Before work is started, see if an "X" is stamped on the outer rear face of the
transfer pump mounting flange near the short mounting bolt. This
identification means that the pump has been reworked at the factory or by
another dealer.
Rework 1W1700 Transfer Pump Groups in your parts stock and stamp an "X" on the
flange.
1W1700 Pumps in the parts distribution system that have a date code of "9-85"
or later contain the latest parts.
WARRANTY ALLOWANCES
* Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hr Parts Labor Hr Parts Labor Hr
(D/N) (Cost)  (C/L) (Sell)
100% 1 0 0  0 0
* If OEM, parts are at C/L and labor at the sell rate.
NOTE: This is a 0.5 hour job, but includes 0.5 hours for rebuilding the pump.
Because of the low dollar value of the parts and labor for each engine to be
modified, the following claim procedure can be used for this Program.
A consolidated claim may be submitted for up to ten reworked engines. Fill out
the heading information for one PIN (S/N) as you normally would for a PSP
claim. List additional PIN's (S/N) with hours or miles at the time of rework
in the "Comment Section" of the claim. Make a SIMS report for each PIN
(S/N) on the claim and indicate in the claim comments "SIMS Entry Made For ALL
PIN's (S/N)".
In the "Other Expenses" section of the claim, list total parts cost. In
the "Authorized Labor" section of the claim, list total labor cost.

Handle all parts in accordance with your Warranty Bulletin on warranty parts
handling.