OEM AR-MOBILE HYD POWER UNIT 3166831 - Caterpillar

Install tool (A) in the recoil spring gp. Use a suitable lifting device. Tool (A) weighs approximately 33 kg (73 lb). Orient the recoil spring gp in the recoil spring bench. Refer to Illustration 9.
Refer to the Disassembly and Assembly Manual that is appropriate for your machine for the remainder of the disassembly procedure.Recoil Spring That Is Not Retained By The Support
When the support is completely gone, the recoil spring is extended and the track is under tension. Relieving the pressure on the track adjuster does not relieve the tension on the track. This part of the procedure has not been validated as this failure mode has not occurred. Please contact Caterpillar Service Engineering before starting this part of the procedure.
Position the track master pin approximately 0.6 m (2 ft) from the top of the idler.
Illustration 10 g01293316
Plate 2 (AA) 750 1 mm (29.5 0.04 inch) (BB) 19.05 mm (0.75 inch)
Illustration 11 g01293320
Plate 3 (CC) 76.2 0.5 mm (3.0 0.02 inch) (DD) Hole diameter 8.7 + 0.152 mm − 0.076 mm (0.34 + 0.006 − 0.003 inch) tapped to M10 x 1.5 -6H thread. (EE) 345 1 mm (13.58 0.04 inch) (FF) 60° (GG) 1063 1.5 mm (41.85 0.06 inch) (HH) 152.4 mm (6.0 inch) (JJ) 101.6 mm (4.0 inch) (KK) 12.7 mm (0.5 inch)
Illustration 12 g01293321
Plate 4 (BB) 19.05 mm (0.75 inch) (FF) 60° (LL) 571.73 2 mm (22.509 0.08 inch)
Illustration 13 g01293322
Plate 5 (BB) 19.05 mm (0.75 inch) (MM) 480 1 mm (18.9 0.04 inch) (NN) 270 1 mm (10.6 0.04 inch)
Illustration 14 g01293323
Plate 6 (BB) 19.05 mm (0.75 inch) (PP) 184.15 mm (7.25 inch) (RR) 31 + 0.508 − 0.254 mm (1.2205 + 0.02 − 0.01 inch) (SS) 38.1 mm (1.5 inch) Radius at 4 places (TT) 234.95 mm (9.25 inch) (UU) 25.4 mm (1.00 inch) (VV) 76.2 mm (3.0 inch)
Illustration 15 g01293325
Plate 7 (BB) 19.05 mm (0.75 inch) (KK) 12.7 mm (0.5 inch) (WW) 30° (XX) 89.2 1 mm (3.51 0.04 inch) (YY) 37.87 mm (1.490 inch) (ZZ) 101.6 1 mm (4.0 0.04 inch) (AAA) 75.6 0.5 mm (2.97 0.02 inch) (BBB) 13 0.5 mm (0.51 0.02 inch)
Fabricate the components for tool (B). Refer to Illustration 10 through Illustration 15.
Illustration 16 g01295900
(2) Plate (2) from Illustration 10 (3) Plate (3) from Illustration 11 (4) Plate (4) from Illustration 12 (5) Plate (5) from Illustration 13 (6) Plate (6) from Illustration 14 (7) Plate (7) from Illustration 15 (CCC) 66.675 1 mm (2.6250 0.04 inch) (DDD) 15.875 0.5 mm (0.6250 0.020 inch) (EEE) 41.275 0.5 mm (1.6250 0.020 inch) (FFF) 298.8 1 mm (11.76 0.04 inch) (GGG) 26.84 1 mm (1.0567 0.04 inch) (HHH) 276.3 1 mm (10.88 0.04 inch) (JJJ) 76.2 1 mm (3.00 0.04 inch) (KKK) 36.45 mm (1.435 inch)
Assemble and weld tool (B). Refer to Illustration 16 and Illustration 17.
Illustration 17 g01290155
Tool (B) (1)