- Excavator:
- 320C (S/N: FBA1-UP; MAA1-UP; MAB1-UP; AMC1-UP; BEF1-UP; DBG1-UP; GNG1-UP; RAW1-UP)
- 320C L (S/N: EGA1-UP; GAA1-UP; GLA1-UP; ANB1-UP; PAB1-UP; HBC1-UP; EAG1-UP; SBN1-UP; HKT1-UP)
- 320C S (S/N: EGL1-UP)
- 320C U (S/N: FBB1-UP; MAC1-UP; CLM1-UP)
- 320C LN (S/N: JTG1-UP)
- 320C LU (S/N: GAB1-UP; CLZ1-UP)
- 320C LRR (S/N: PAC1-UP; GAD1-UP)
- 320C FMST (S/N: TBR1-UP)
- 320C FMHW (S/N: SAH1-UP)
- 320D (S/N: AZR1-UP; EBT1-UP; CXY1-UP)
- 320D L (S/N: FNA1-UP; DHK1-UP; BWP1-UP)
- 320D RR (S/N: GKL1-UP; AMR1-UP)
- 320D LRR (S/N: CWN1-UP; EBY1-UP)
- 321C CR (S/N: DAX1-UP)
- 321C LCR (S/N: KBB1-UP; MCF1-UP; KCR1-UP)
- 323D L (S/N: SDC1-UP; JLG1-UP; PBM1-UP)
- 323D S (S/N: SED1-UP; DKW1-UP)
- 323D LN (S/N: RAC1-UP; CYD1-UP)
The new 305-4908 Idler Pulley is available for the replacement of the former 294-1782 Idler Pulley or the former 183-8236 Idler Pulley Gp. The idler pulley is part of the pulley gp on the engine.
 | |
| Illustration 1 | g01367260 |
305-4908 Idler Pulley (B) Cover (C) Ring (D) Bearing (E) Pulley (F) Ring (G) Bracket (H) Bolt | |
The new idler pulley has added a cover that protects the bearings from dirt and water. The new idler pulley also adds a rubber ring in order to protect the bearings. The strength is increased for the pulley shaft on bracket (G). The new idler pulley has increased durability. Refer to Illustration 1 for the components in the new idler pulley.
 | |
| Illustration 2 | g01367264 |
Typical Engine Pulley Group (1) 305-4908 Idler Pulley | |
Install a new 305-4908 Idler Pulley if the bearings in the former idler pulley fail or if the fan drive belt squeals. Refer to Illustration 2 for the location of the idler pulley.
Note: Tighten the bolt in the new idler pulley to a torque of 33 ± 3.3 N·m (24 ± 2.5 lb ft).