- Engine:
- 3512C (S/N: TTG1-UP; NJT1-UP; F2X1-UP)
Description of Change: The new mounting hardware and band clamps make a more robust joint.
Adaptable To: The new parts are adaptable back to first production of the engines listed above. The new parts are listed in Table 1. Refer to the procedure below for installing the new V band clamps and mounting hardware.
The new v band clamps and hardware are effective with the following serial numbers:
- TTG00333-UP
- NJT00232-UP
- F2X00294-UP
| Qty | New Part Number | Former Part Number |
|---|---|---|
| 4 | 434-6544 V Band Clamp | 243-2975 V Band Clamp |
| 5 | 1A-2029 Bolts | 0S-1594 Bolts |
| 4 | 0S-1590 Bolts | 0S-1591 Bolts |
| 13 | 8M-9124 Washers | 9X-6458 Hard Washer |
| 8 | 5M-2894 Hard Washer | . |
| 2 | 302-6504 Bellows |
Installation Procedure
- Remove the four existing V band clamps.
 | |
| Illustration 1 | g03692906 |
Typical left-side view (1) 434-6544 V Band Clamp (2) 302-6504 Bellows (3) 0S-1591 Bolts (4) 9X-6458 Hard Washers (5) 9S-8752 Full Nuts (6 ) Existing bracket (7) 0S-1594 Bolts | |
 | |
| Illustration 2 | g03692918 |
Typical right-side view (1) 243-2975 V Band Clamp (2) 302-6504 Bellows (3) 0S-1591 Bolts (4) 9X-6458 Hard Washers (5) 9S-8752 Full Nuts (6 ) Existing bracket (7) 0S-1594 Bolts | |
- Remove the two existing bellows.
- Remove five bolts (7) and five washers (4) .
- Remove four bolts (3), eight washers (4) and four nuts (5). Retain nuts (5) for reuse.
- Remove both brackets (6). Clean all paint from all metal to metal mating surfaces and under the washers. Retain for reuse. Refer to Illustrations 1 and 2.
- Install the new 302-6504 Bellows .
- Install four new 434-6544 V Band Clamps (1) .
- Install three new bolts (8) and three new washers (9) .
 | |
| Illustration 3 | g03694157 |
Typical left-side view (5) 9S-8752 Full Nuts (8) 1A-2029 Bolts (9) 8M-9124 Washers (10) 0S-1590 Bolts | |
- Install two new bolts (10), four new washers (9) and two previously removed nuts (5) .
- Install two new bolts (8) and two new washers (9) .
 | |
| Illustration 4 | g03694190 |
Typical right-side view (5) 9S-8752 Full Nuts (8) 1A-2029 Bolts (9) 8M-9124 Washers (10) 0S-1590 Bolts | |
- Install two new bolts (10), four new washers (9) and two previously removed nuts (5). Refer to Illustrations 3 and 4.
- Ensure that the tube assembly is attached to the aftercooler using four 0S-1594 Bolts (7) and four 5M-2894 Hard Washers (11) .
- If the washers are not installed, remove one bolt at a time and install one washer per bolt.
- Tighten bolts (7) to 47 ± 9 N·m (35 ± 7 lb ft). Refer to Illustration 5
 | |
| Illustration 5 | g03694264 |
Typical left-side view (7) 0S-1594 Bolts (11) 5M-2894 Hard Washers | |
- Ensure that the tube assembly is attached to the aftercooler using four 0S-1594 Bolts (7) and four 5M-2894 Hard Washers (11) .
- If the washers are not installed, remove one bolt at a time and install one washer per bolt.
- Tighten bolts (7) to 47 ± 9 N·m (35 ± 7 lb ft). Refer to Illustration 6.
 | |
| Illustration 6 | g03694275 |
Typical right-side view (7) 0S-1594 Bolts (11) 5M-2894 Hard Washers | |
- Tighten the new 1A-2029 Bolts (8) to 47 ± 9 N·m (35 ± 7 lb ft).
 | |
| Illustration 7 | g03694928 |
Bolt callout and tightening sequence (7) Sequence A (8) Sequence B (10) Sequence C (1) Sequence D | |
Note: Tighten the bolts and clamps in alphabetical order, refer to Illustration 7.
- Tighten the new 434-6544 V Band Clamps (1) to 12 ± 1 N·m (106 ± 9 lb in).