- Generator Set:
- G3520C (S/N: CWW1-UP; GZK1-UP; GZN1-UP; RLP1-UP; LGS1-UP)
- G3520E (S/N: GZH1-UP)
ReferenceDisregard the original article. The part number of the crankshaft has been changed. Refer to the information below.
A new damper group is used on 1500 rpm generator sets. This damper provides improved torsional performance and ambient temperature capability.
The new 319-8494 Damper Gp is supplied with engine oil through an inlet and a return port in the crankshaft. In order to perform this upgrade, the engine must be equipped with the 315-1391 Crankshaft that is drilled and the engine must use the 247-0308 Flexible Coupling Gp .
Refer to Table 1 for a list of parts.
Refer to Illustrations 1, 2, and 3.
This change is effective with the serial numbers that are listed in Table 2.
| Parts List For The 319-8494 Damper Gp | ||
| Item | Qty | Part |
| 1 | 6 | 7B-8363 Bolt |
| 2 | 6 | 5P-8250 Washer |
| 3 | 1 | 315-2616 Damper Gp (1) |
| 4 | 1 | 117-8801 O-Ring Seal |
| 5 | 1 | 324-2702 Seal |
| ( 1 ) | The 324-2702 Seal for the oil return is included as part of the 315-2616 Damper Gp. The 324-2702 Seal is a serviceable part. |
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| Illustration 1 | g01569498 |
Front view | |
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| Illustration 2 | g01569500 |
Side view | |
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| Illustration 3 | g01576115 |
Section view | |
(1) Bolt
- Torque ... 1125 ± 100 N·m (830 ± 74 lb ft)
(2) Washer
(3) Damper
(4) O-ring seal
Lubricate the bore of the O-ring seal with clean engine oil.
(5) Seal
Note: The alignment mark on the damper must be aligned with the mark on the crankshaft.
| Effective Serial Numbers |
| S/N:LGS00154-UP |
| S/N:RLP00181-UP |
| S/N:GZN00686-UP |
| S/N:GZH00134-UP |