REVERSE AND REDUCTION GEAR ARRANGEMENT 1L7666 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A(1) 253-3272 Cylinder 2
B(2) 178-9312 Hose As 2
C(3) 253-3276 Distribution Coupler 1
185-0683 Gage As 1
D(4)(5) 227-6724 Electric Hydraulic Pump Gp (120 V) 1
227-8834 Electric Hydraulic Pump Gp (240 V) 1
191-5347 Hydraulic Pump Gp 1
156-7167 Manual Hydraulic Pump 1
E 279-3473 Engine Turning Tool 1
329-3831(6) Air Power Turning Tool 1
F 369-4007 Bearing Driver 1
G - Guide Stud M20 - 2.5 by 250 MM 2
(1) Part of Tool Group 278-1150
(2) Part of Tool Group 278-1150
(3) Part of Tool Group 278-1150
(4) Use any of the pumps that are listed in Tooling (D) for this procedure.
(5) The latest pumps and hoses require (22000 psi) capacity.
(6) OptionalStart By:
Remove the starting motors.
Remove the fuel pump.
Remove the engine oil pump
Remove the engine oil cooler.
Remove the engine oil scavenge pump.
Illustration 1 g01212026
Illustration 2 g01212278
Remove bolts (1) and remove side cover (2). Repeat for the remaining side covers on both sides of the engine.
Remove bolt (5) from each side of the engine and install Tooling (G).
Illustration 3 g01212105
Install Tooling (A) onto the studs for the crankshaft main bearing cap. Tighten the threaded collar of Tooling (A). Loosen the threaded collar of Tooling (A) by 1 1/2 turns. Attach Tooling (B) onto Tooling (A). Attach Tooling (B) onto Tooling (C). Attach Tooling (C) onto Tooling (D). Apply approximately 135 MPa (19580 psi) of pressure to Tooling (A). Use the drive on Tooling (A) in order to loosen the nuts for the crankshaft main bearings. Rotate the drive on Tooling (A) by approximately three turns. Release the pressure on Tooling (A). Remove Tooling (A).
Illustration 4 g01212274
Remove crankshaft main bearing nuts (3). Remove plate (4).
Illustration 5 g01212288
Slide down crankshaft main bearing cap (6) on the studs. Remove crankshaft main bearing (7) from crankshaft main bearing cap (6).
Install Tooling (F) in order to remove the upper crankshaft main bearing. If necessary, use Tooling (E) in order to rotate the crankshaft and remove the upper crankshaft main bearing.