MOUNTING 2G8098 - Caterpillar

Engine: G3512E (S/N: SSR1-UP; NGS1-UP) G3516C (S/N: GSB1-UP; TJB1-UP; GZC1-UP; TJC1-UP; GZZ1-UP) G3516E (S/N: GAS1-UP; SLY1-UP) G3520B (S/N: TPC1-UP; GLF1-UP) G3520C (S/N: GZA1-UP; GZB1-UP; MAD1-UP; GZJ1-UP; GZK1-UP; GZL1-UP; GZM1-UP; GZN1-UP; B9P1-UP; RLP1-UP; LGS1-UP; HAT1-UP; CWW1-UP; CWY1-UP) G3520E (S/N: GZG1-UP; GZH1-UP; HAL1-UP; SXY1-UP)Introduction
Do not perform any procedure that is outlined in this publication until you understand the information that is contained in this document.A new drive coupling assembly for the compressor bypass is available for the engines that are listed above. The new 353-6981 Drive Coupling Assembly will compensate for thermal growth, movement from vibration and a slight misalignment in mounting.Use the following instructions to remove the existing coupler for the compressor bypass and install the new coupler for the compressor bypass.Required Parts
Table 1 lists the parts that are used for updating the existing coupling to the new 353-6981 Drive Coupling Assembly .
Table 1
Parts for the Update to the Coupling    
Part Number     Description     Quantity    
353-6981     Drive Coupling Assembly     1    
328-0756     Valve As     1    Table 2 lists the serviceable parts that are available for the new 353-6981 Drive Coupling Assembly .
Table 2
Serviceable Parts for the 353-6981 Drive Coupling Assembly    
Part Number     Description     Quantity    
223-1175     Torsion Spring     2    
328-0760     Adapter     1    
328-0761     Yoke     1    
328-0762     Tooth     2    
328-0763     Spring Pin     2    
328-0756     Valve As     1    Removal Procedure
Illustration 1 g02112464
(1) Existing actuator assembly
Remove actuator assembly (1) from the engine.
Illustration 2 g02112485
(1) Existing actuator assembly (2) Screw (3) Coupling (4) Valve assembly (5) Bolts (6) Bracket
Loosen screw (2) from coupling (3) .
Remove bolts (5) from bracket (6) .
Remove bracket (6) and valve assembly (4) from actuator assembly (1) .Installation Procedure
Illustration 3 g02112515
(7) 328-0756 Valve As (8) 328-0763 Spring Pin (9) 328-0762 Tooth
Install tooth (9) and spring pin (8) onto the shaft of valve assembly (7) .
Illustration 4 g02112537
View of pin that is installed into tooth and shaft
Insert pin (8) until the pin is flush with the outside diameter of tooth (9) .Note: A drill bit with an outside diameter of 4.7 mm (0.185 inch) can be used in order to align the holes of the tooth with the holes in the shaft.
Illustration 5 g02112700
(10) 223-1175 Torsion Spring
Install one end of spring (10) through pin (8) .
Illustration 6 g02122536
(11)