PISTON GP 8N3181 - Caterpillar

Illustration 1 g03353641
(4) Drive shaft assembly (5) Idler shaft assembly
Table 1
Specification for 4W-0675 Engine Oil Pump Gp    
Item     Qty     Part     Specification Description    
1     1     6V-7702 O-Ring Seal     Before assembly, lightly lubricate the bore that is being sealed.    
6     1     6V-3538 Dowel     Assemble the dowel in the position (2) for counter clockwise engine rotation.    
Assemble the dowel in the position (3) for clockwise engine rotation.
Extension of dowel is 8.00 1.00 mm (0.315 0.039 inch).
-     -     -     Prior to operation, the pump bearings must have an external supply of oil. Before the pump is operated, lubricate the pump with oil. Rotate the pump by hand and make sure that the pump rotates freely.    
-     -     -     Nominal flow with the pump at 1524 rpm is
1800 L/min (476 US gpm).    
Illustration 2 g03353642
Section A-A
Table 2
Item     Qty     Part     Specification Description    
E     -     -     Depth of the bearings in the cover is
7.50 0.25 mm (0.295 0.009 inch).    
F     2     7N-5683 Dowel     Distance from the top of the dowels to the surface of the cover is
12.00 1.00 mm (0.472 0.039 inch).    
G     1     4W-3997 Bushing     Bore of bushing before installation is
60.115 0.020 mm (2.3667 0.0008 inch).    
H     1     4W-3996 Bushing     Bore of bushing before installation is
60.115 0.020 mm (2.3667 0.0008 inch).    
-     -     -     Before assembly, cool the bearings and the bearing driver to
-75° C (-103° F) to minimize the press fit.
Align the oil holes in the bearing with the oil holes in the cover.    
Illustration 3 g03353643
Section B-B
Table 3
Item     Qty     Part     Specification Description    
J     2     7E-7066 Bushing     Outer diameter of bushing is
66.126 0.020 mm (2.6034 0.0008 inch).
Thickness is
3.000 0.013 mm (0.1181 0.0005 inch).    
Before assembly, cool the bearings and the bearing driver to
-75° C (-103° F) to minimize the press fit.
Align the oil holes in the bearing with the oil holes in the body.
K     -     -     Depth of the bearings in the body is
12.30 0.25 mm (0.484 0.010 inch).    
L     -     -     Depth in the body for gear assembly is
155.20 0.04 mm (6.110 0.002 inch).    
Illustration 4 g03353645
(4) Drive shaft assembly
Table 4
Item     Qty     Part     Specification Description    
M     -     -     Distance from the end of the drive shaft to the gear face is
169.50 0.50 mm (6.673 0.020 inch).    
N     1     7W-2825 Pump Drive Shaft     Diameter is
59.930 0.010 mm (2.3594 0.0004 inch).    
P     1     4W-6856 Gear     Length is
155.000 0.020