COVER 1915663 - Caterpillar

Installation Procedure for 281-8235 Auxiliary Hydraulic Lines Gp
Illustration 2 g02712150
Without high flow auxiliary lines
(1) 6C-6760 Manifold
(2) 149-1738 Clip
(3) 177-8572 Hose As
(4) 187-9977 Plate
(5) 187-9978 Support As (LH)
(6) 187-9981 Support As (RH)
(7) 250-1440 Adapter As
(8) 253-6685 Tube As
(9) 6V-8398 O-Ring Seal
(10) 8T-4121 Hard Washer
(11) 8T-4136 Bolt
(12) 8T-4139 Bolt
(13) 8T-4185 Bolt
(14) 8T-4223 Hard Washer
Support installation without high flow auxiliary lines.
Install plate (4) on the stick with bolts (11) and washers (10).
Install right-hand support assembly (6) on the stick with bolts (12) and washers (14).
Illustration 3 g02720609
With high flow auxiliary lines
(1) 6C-6760 Manifold
(2) 149-1738 Clip
(3) 177-8572 Hose As
(4) 187-9977 Plate
(5) 187-9978 Support As (LH)
(6) 187-9981 Support As (RH)
(7) 250-1440 Adapter As
(8) 253-6685 Tube As
(9) 6V-8398 O-Ring Seal
(10) 8T-4121 Hard Washer
(12) 8T-4139 Bolt
(13) 8T-4185 Bolt
(14) 8T-4223 Hard Washer
(15) 197-2362 Plate
(16) 7X-2543 Bolt
(17) 8T-4183 Bolt
Support installation with high flow auxiliary lines.
Loosen the existing bolts in clips (A), (B), and valve (C).
Remove and discard the existing bolts from valve (C). Install plate (4) between valve (C) and the mounting block. Install bolts (16) and washers (10) in valve (C) and plate (4).
Remove and discard the existing bolts from clips (B). Install plate (15) between clips (B) and the mounting block. Install bolts (17) and washers (14) in clips (B) and plate (15).
Remove and discard the existing bolts from clips (A). Install right-hand support assembly (6) between clips (A) and the mounting block. Install bolts (17) and washers (14) in clips (A) and support (6).
Install manifold (1) on plate (4) with bolts (13) and washers (10).
Install adapter (7) in manifold (1). Note: Make sure O-ring seals (9) are installed in both ends of tube (8).
Connect tube (8) to adapter (7) on manifold (6). Install clips (2) on tube (8) and install bolts (12) and washers (14) on support (6).
Connect hose (3) to tube (8) and the boom lines.
Torque both of the connections for tube (8) to 76 4 N m (56 3lb ft). Tighten all other hose connections. Tighten all the bolts for the supports and clips.
Repeat the installation procedure for the left side substituting left side support (5) for right side support (6).