TRANSFORMER 3707375 - Caterpillar

Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.Note: SERVICE DATA: TOOLING (ZZ) WILL NOT BE IDENTIFIED IN PHOTOGRAPHS IN THE REMOVAL OR THE INSTALLATION. THIS TOOLING IS SHOWN IN ORDER TO ASSIST THE EXPERIENCED SERVICEMAN.
Lower the boom until the boom cylinder is fully collapsed. Lower the stick to the ground.
Illustration 1 g01025100
Attach a suitable lifting device to the stick cylinder (1) by using Tooling (A) and (B), as shown. Remove bolt (2) and pin assembly (3). Lower the rod end of stick cylinder (1) away from the stick.
Illustration 2 g01025103
Remove guards (4) from both sides of the stick. Disconnect four hose assemblies (5) from each side of the stick. Disconnect hose assemblies (6) for the tilt cylinder from each side of the stick.
Illustration 3 g01025241
Remove bolts (7) from the upper part of belt (8). Position belt (8) onto the stick. Remove the nut and washer (9).
Illustration 4 g01025257
Illustration 5 g01025306
Disconnect clips (10). Disconnect hose assembly (11) from the stick. Disconnect harness assembly (12) from the back of the lights. The connector (13) that is located on the back of the light assembly must be disassembled before the harness assembly can be removed from the stick. Remove harness assembly (12) from the stick.
Illustration 6 g01025359
Illustration 7 g01025344
Attach a suitable lifting device to stick (16). Remove bolt (14). Remove pin (15). It may be necessary to use Tooling (C), (D), (E) and (F) for removal of pin assembly (15), as shown. Remove stick (16). The weight of the stick is approximately 1225 kg (2700 lb). Removal and Installation of the Stick Bearings and Seals
Table 2
Required Tools
Tool Part Number Description Qty
A 6V-3175 Double Acting Cylinder 1
B 4C-9634 Puller Stud 1
C 9U-5339 Bearing Puller 1
D 1P-0520 Driver Gp 1
E 1P-1835 Bearing Puller Adapter 1
F 1P-1838 Bearing Puller Adapter 1 Removal
Illustration 8 g01029058
Remove the seals (1), (2) and (3). Remove the bearings. Installation
Illustration 9 g01029058
Illustration 10 g01025953
Typical example
Install bearings (1) by using Tooling (A), (B) and (C) (not shown) by pulling the bearings into the bores, as shown. Install the seal by using Tooling (D).
Install bearings (2) by using Tooling (A), (B) and (F) (not shown), as shown. Install the seal by using Tooling (D).
Install bearings (3) by using Tooling (A), (B) and (E) (not shown), as shown. Install the seal by using Tooling (D).