2007/04/09 Caterpillar

An Improved Clamp is Used {1355, 1380, 1393}

Usage:

Engine: 3508 (S/N: 95Y1-UP; 23Z1-UP; 68Z1-UP) 3512 (S/N: 49Y1-UP; 24Z1-UP; 65Z1-UP; 67Z1-UP) 3512B (S/N: 1PW1-UP) 3516 (S/N: 27Z1-UP) 3516B (S/N: CBN1-UP; 2FW1-UP; S2Z1-UP)

Description of Change: An improved clamp is used in order to fasten the tube assembly to the water pump elbow on the 3500 engines that are listed above. The clamp is more resistant to vibration. The clamp will prevent abrasion to the O-ring seals that seal the coolant bypass tube and the water pump elbow.

Adaptable To: In the 8N-7719 Water Lines Gp, two 8N-3639 Retainers have been replaced by two 108-6170 Clamp As. Refer to Table 1 for the parts that are used with the clamp.

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Table 1
Parts that are Used with the 108-6170 Clamp As
Part Number	Description	Quantity
108-6170	Clamp As	2
5M-2894	Hard Washer	6
0S-1571	Bolt	2
0S-1594	Bolt	2
9S-8752	Full Nut	2
6V-5066	O-Ring Seal	1
110-0096	Ring	1

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Illustration 1	g01367077
(1) 5M-2894 Hard Washer (2) 0S-1571 Bolt (3) 8N-6406 Tube (4) 8N-8380 Elbow (5) 9S-8752 Full Nut (6) 0S-1594 Bolt (7) 6V-5066 O-Ring Seal (8) 110-0096 Ring (9) 108-6170 Clamp As

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Illustration 2	g01367075
Front View

The clamp is adaptable to the 3500 engines that are listed above. Serial number effectivity is listed in Table 2.

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Table 2
Serial Number Effectivity
Former 8N-3639 Retainer	New 108-6170 Clamp As
S/N:1PW00355-00449	S/N:1PW00450-UP
S/N:23Z07408-08007	S/N:23Z08008-UP
S/N:24Z09003-10238	S/N:24Z10239-UP
S/N:27Z00802-00897	S/N:27Z00898-UP
S/N:2FW00177-00411	S/N:2FW00412-UP
S/N:49Y00298-01100	S/N:49Y01101-UP
S/N:65Z00955-01315	S/N:65Z01316-UP
S/N:67Z01811-02193	S/N:67Z02194-UP
S/N:68Z01105-01321	S/N:68Z01322-UP
S/N:95Y01089-01312	S/N:95Y01313-UP
S/N:CBN00256-00477	S/N:CBN00478-UP
S/N:S2Z00101-00143	S/N:S2Z00144-UP