Installation Procedure to Retrofit a Boom Lowering Control Valve and a Stick Lowering Control Valve on Certain 330D, 336D, and 336D2 Excavators {5067, 5117, 5147, 5453, 5811} Caterpillar


Installation Procedure to Retrofit a Boom Lowering Control Valve and a Stick Lowering Control Valve on Certain 330D, 336D, and 336D2 Excavators {5067, 5117, 5147, 5453, 5811}

Usage:

336D L DTS
Excavator
330D (S/N: RDA1-UP; GBC1-UP; NBD1-UP; R2D1-UP; GGE1-UP; THJ1-UP; LRM1-UP; ERN1-UP; RAS1-UP; MEY1-UP; T2Y1-UP)
336D (S/N: SKE1-UP; J2F1-UP; JBF1-UP; PRF1-UP; LMG1-UP; MYG1-UP; KDJ1-UP; W3K1-UP; WRK1-UP; PPN1-UP; MYP1-UP; JER1-UP; JWR1-UP; DTS1-UP; NLS1-UP; KKT1-UP; WET1-UP; PGW1-UP)
336D2 (S/N: WDC1-UP; YCF1-UP; XBH1-UP; FAR1-UP; EFT1-UP; TLY1-UP)

Introduction

This Special Instruction outlines the installation procedure to retrofit a 418-6206 Check and Relief Valve Ar and a 255-5868 Load Control Valve Ar on certain excavators listed above.

Do not perform any procedure or order any parts that are outlined in this publication until you understand the information.

Safety


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.

Dispose of all fluids according to local regulations and mandates.


------ WARNING! ------

Hydraulic oil pressure can remain in the hydraulic systems after the engine and pump have been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic systems. To prevent possible injury, refer to the section, Testing and Adjusting, "Hydraulic System Pressure - Release" before any fitting, hose or component is loosened, tightened, removed or adjusted.

When possible, the bucket or attachment must always be lowered to the ground before service is started. When it is necessary for the boom to be in the raised position while tests or adjustments are done, be sure that the boom, stick and bucket or attachment have correct support.

The swing lock (if equipped) must be engaged before service is started.

Always move the machine to a location away from the travel of other machines. Be sure that other personnel are not near the machine when the engine is running and tests or adjustments are being made.


Required Parts

Check and Relief Valve Arrangement

Table 1
418-5071 Boom Cylinder Lines Gp 
Item  Part Number  Part Name  Qty 
7K-1181  Cable Strap  22 
108-7550  Clip 
465-5185  Support As 
4I-9525  Marker Band (ORANGE, R1) 
149-1738  Clip 
418-9212  Tube As 
418-9213  Tube As 
418-9214  Pipe As 
465-5188  Support As 
10  418-9216  Pipe As 
11  465-5190  Support As 
12  245-5110  Hose As(1) 
7I-7439 Hose Guard  265 cm (104.3 inch) (per hose assembly) 
124-2114 Coupling  2 (per hose assembly) 
122-6869 Hydraulic Hose  221 cm (87.0 inch) (per hose assembly) 
13  245-5113  Hose As(1) 
124-2114 Coupling  2 (per hose assembly) 
7I-7439 Hose Guard  292 cm (115.0 inch) (per hose assembly) 
122-6869 Hydraulic Hose  243 cm (95.7 inch) (per hose assembly) 
14  245-5116  Hose As(1) 
153-0785 Permanent Coupling As  2 (per hose assembly) 
7I-7439 Hose Guard  213 cm (83.9 inch) (per hose assembly) 
161-1833 Hydraulic Hose  150 cm (59.1 inch) (per hose assembly) 
15  245-5120  Support As 
16  245-5122  Block 
17  270-5692  Manual Valve Gp (BOOM LOWER) 
18  260-8278  Hose As(1) 
7I-1024 Hose Guard  123 cm (48.4 inch) 
124-2119 Permanent Coupling 
124-2150 Permanent Coupling 
122-6871 Hydraulic Hose  105 cm (41.3 inch) 
19  263-1962  Load Control Valve Gp 
20  148-8336  Connector As(2) 
3J-1907 O-Ring Seal 
6V-8397 O-Ring Seal 
6V-8636 Connector 
21  148-8341  Connector As(2) 
3D-2824 O-Ring Seal 
6V-8713 Connector 
7J-9108 O-Ring Seal 
22  148-8347  Elbow As(3) 
3D-2824 O-Ring Seal 
6V-9007 Elbow 
6V-9746 O-Ring Seal 
23  148-8361  Elbow As(3) 
3J-7354 O-Ring Seal 
6V-8397 O-Ring Seal 
6V-9200 Elbow 
24  148-8378  Elbow As(3) 
3J-1907 O-Ring Seal 
6V-8397 O-Ring Seal 
6V-8724 Elbow 
25  1P-3703  Rectangular Seal 
26  1P-3704  Rectangular Seal 
27  5K-9090  O-Ring Seal 
28  8T-4121  Hard Washer  10 
29  8T-4139  Bolt  10 
30  8T-4176  Bolt 
31  8T-4185  Bolt 
32  8T-4196  Bolt 
33  8T-4223  Hard Washer  20 
34  108-3819  Bolt 
35  8T-4648  Bolt 
36  148-8411  Plug(4) 
3K-0360 O-Ring Seal 
9S-4185 Plug 
37  7J-9108  O-Ring Seal 
38  4I-9521  Marker Band (RED, L1) 
39  4I-9522  Marker Band (YELLOW, L2) 
40  4I-9526  Marker Band (WHITE, R2) 
(1) Hose assembly is not serviceable.
(2) Connector assembly is not serviceable.
(3) Elbow assembly is not serviceable.
(4) Plug assembly is not serviceable.

Table 2
255-2077 Return Lines Gp 
Item  Part Number  Part Name  Qty 
194-0354  Hose As(1) 
5K-9090 O-Ring Seal 
124-2123 O-Ring Face Seal Coupling 
124-2155 Coupling As 
122-6873 Hydraulic Hose  123.8 cm (48.7 inch) 
223-6732  Tube As 
260-8086  Hose As(1) 
124-2121 Permanent Coupling 
124-2153 Coupling 
122-6872 Hydraulic Hose  119 cm (46.9 inch) 
148-8357  Elbow As(2) 
5K-9090 O-Ring Seal 
6V-9008 Elbow 
7M-8485 O-Ring Seal 
148-8411  Plug(3) 
3K-0360 O-Ring Seal 
9S-4185 Plug 
185-0488  Block 
1P-3703  Rectangular Seal 
207-6449  Block 
4J-5268  O-Ring Seal 
10  5K-9090  O-Ring Seal 
11  6V-9746  O-Ring Seal 
12  7M-8485  O-Ring Seal 
13  8T-5005  Bolt 
14  329-5528  Elbow As(2) 
8T-8899 Elbow 
228-7092 O-Ring Seal 
15  275-1418  Hose As 
153-0793 Permanent Coupling As 
153-0803 Permanent Coupling As 
7Y-5074 Hose Guard  85 cm (33.5 inch) 
161-1835 Hydraulic Hose  82 cm (32.3 inch) 
16  1P-3702  Rectangular Seal 
(1) Hose assembly is not serviceable.
(2) Elbow assembly is not serviceable.
(3) Plug assembly is not serviceable.

Table 3
255-1855 Pilot Lines Gp 
Item  Part Number  Part Name  Qty 
4I-0800  Hose As 
4I-0818  Hose As(1) 
6V-8397 O-Ring Seal 
146-3340 Permanent Coupling 
146-3358 Permanent Coupling 
135-7855 Hose  75.6 cm (29.8 inch) 
7K-1181  Cable Strap  15 
087-6583  Hose As(1) 
6V-8397 O-Ring Seal 
149-3340 Permanent Coupling 
135-7855 Hose  246.8 cm (97.2 inch) 
113-6738  Hose As(1) 
6V-8397 O-Ring Seal 
146-3340 Permanent Coupling 
135-7855 Hose  305 cm (120.1 inch) 
133-5813  Marker Band (GRAY, P) 
266-0982  Guard 
148-8363  Elbow As(2) 
3K-0360 O-Ring Seal 
6V-8397 O-Ring Seal 
6V-9876 Elbow 
148-8433  Tee As(3) 
6V-8397 O-Ring Seal 
6V-9836 Swivel Tee 
(1) Hose assembly is not serviceable.
(2) Elbow assembly is not serviceable.
(3) Tee assembly is not serviceable.

Load Control Valve Arrangement

Table 4
237-3200 Boom Lines Gp 
Item  Part Number  Part Name  Qty 
5I-4393  Hose As(1) 
149-8476 Permanent Coupling 
423-1972 Hose  83 cm (32.7 inch) 
7K-1181  Cable Strap 
179-5235  Clip 
179-5254  Plate 
193-6662  Plate 
212-5419  Hose As(1) 
6V-8397 O-Ring Seal  4 (2 per hose assembly) 
146-3340 Permanent Coupling  4 (2 per hose assembly) 
135-7855 Hose  423.8 cm (166.9 inch) (per hose assembly) 
356-8170  Plate 
282-5718  Tube As 
149-5452  Union As(2) 
6V-8397 O-Ring Seal 
6V-8994 Union 
10  5Q-4212  Clip 
11  6V-8398  O-Ring Seal 
12  6V-9168  Nut 
13  8T-4139  Bolt 
14  447-1704  Bolt 
15  8T-4223  Hard Washer  10 
16  8T-4244  Nut 
17  8T-5001  Bolt 
18  451-2175  Hard Washer 
(1) Hose assembly is not serviceable.
(2) Union assembly is not serviceable.

Table 5
255-1854 Pilot Lines Gp (STICK LOAD CONTROL) 
Item  Part Number  Part Name  Qty 
7K-1181  Cable Strap 
201-9379  Block 
269-9944  Hose As(1) 
7I-7439 Hose Guard  177 cm (69.7 inch) 
149-8474 Permanent Coupling 
149-8501 Permanent Coupling 
423-1971 Hose  349 cm (137.4 inch) 
437-0481  Hose As(1) 
149-8476 Permanent Coupling 
7I-7439 Hose Guard  156 cm (61.4 inch) 
423-1972 Hose  116 cm (45.7 inch) 
285-2592  Hose As(1) 
6V-8397 O-Ring Seal 
7I-7439 Hose Guard  216 cm (85 inch) 
149-8474 Permanent Coupling 
149-8493 Permanent Coupling 
423-1971 Hose  189.8 cm (74.7 inch) 
148-8336  Connector As(2) 
3J-1907 O-Ring Seal 
6V-8397 O-Ring Seal 
6V-8636 Connector 
148-8364  Elbow As(3) 
3K-0360 O-Ring Seal 
6V-8398 O-Ring Seal 
6V-8625 Elbow 
148-8433  Tee As(4) 
6V-8397 O-Ring Seal  2 (per tee assembly) 
6V-9836 Swivel Tee  1 (per tee assembly) 
133-5813  Marker Band (GRAY, P) 
10  4I-9523  Marker Band (BLUE, L3) 
11  148-8378  Elbow As 
3J-1907 O-Ring Seal 
6V-8397 O-Ring Seal 
6V-8724 Elbow 
(1) Hose assembly is not serviceable.
(2) Connector assembly is not serviceable.
(3) Elbow assembly is not serviceable.
(4) Tee assembly is not serviceable.

Table 6
237-3199 Stick Cylinder Lines Gp 
Item  Part Number  Part Name  Qty 
093-1290  Clamp 
093-1294  Clamp 
124-0903  Support As 
202-6752  Support As 
216-6513  Support As 
216-6515  Clip 
259-7692  Load Control Valve Gp (DRIFT REDUCTION, VAR ADJ BOOM) 
268-7208  Tube As 
268-7209  Tube As 
10  268-7211  Tube As 
11  268-7213  Tube As 
12  108-1782  Bolt 
13  148-8328  Connector As(1) 
3D-2824 O-Ring Seal 
6V-8398 O-Ring Seal 
6V-8633 Connector 
14  148-8368  Elbow As(2) 
3J-1907 O-Ring Seal 
4J-5477 O-Ring Seal 
6V-8627 Elbow 
15  1P-3705  Rectangular Seal 
16  6V-8397  O-Ring Seal 
17  6V-8398  O-Ring Seal 
18  447-1708  Bolt 
19  8T-4121  Hard Washer 
20  8T-4186  Bolt 
21  447-1711  Bolt 
22  8T-4196  Bolt 
23  8T-4223  Hard Washer 
24  8T-6868  Bolt 
25  451-2175  Hard Washer 
(1) Connector assembly is not serviceable.
(2) Elbow assembly is not serviceable.

Machine Preparation

  1. Position the machine on level ground.

  2. Fully retract the stick cylinder rod. Adjust the position of the bucket so that the bucket is parallel to the ground. Lower the boom until the bucket is flat on the ground.

  3. Shut off the engine.

  4. Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release".

Procedure For Installing the Check and Relief Valve Arrangement

Boom Cylinder Lines Group



    Illustration 1g03801647
    387-9380 Boom Cylinder Lines Gp (LH)


    Illustration 2g03802036
    387-9382 Boom Cylinder Lines Gp (RH)


    Illustration 3g03802102
    260-7870 Boom Cylinder Lines Gp (BOOM)

  1. Before installing 418-5071 Boom Cylinder Lines Gp, remove the parts shown in Illustrations 1,2, and 3, and listed in Table 7.

    Table 7
    Standard Removal Parts 
    Item  Part Number  Part Name  Qty 
    A1  1P-3703  Rectangular Seal 
    A2  8T-4910  Bolt 
    A3  387-8299  Tube As 
    A4  5K-9090  O-Ring Seal 
    A5  8T-4223  Hard Washer 
    A6  8T-4139  Bolt 
    A7  465-5186  Support As 
    A8  108-7550  Clip 
    A9  465-5185  Support As 
    A10  8T-4121  Hard Washer 
    A11  8T-4196  Bolt 
    B1  1P-3703  Rectangular Seal 
    B2  8T-4910  Bolt 
    B3  387-8297  Tube As 
    B4  5K-9090  O-Ring Seal 
    B5  8T-4223  Hard Washer 
    B6  8T-4139  Bolt 
    B7  465-5185  Support As 
    B8  108-7550  Clip 
    B9  465-5187  Support As 
    B10  8T-4121  Hard Washer 
    B11  8T-4196  Bolt 
    C1  123-2809  Support As 
    C2  8T-4139  Bolt 
    C3  8T-4223  Hard Washer 


    Illustration 4g03794353
    418-5071 Boom Cylinder Lines Gp


    Illustration 5g03794356
    418-5071 Boom Cylinder Lines Gp

  2. Install 418-5071 Boom Cylinder Lines Gp. Refer to Table 1 for a list of the required parts. Refer to Illustrations 4 and 5 for the location of the parts. Refer to Tables 8 through 11 for the required parts to build hose assemblies (12), (13), (14), and (18). Refer to Table 12 for specifications.

Table 8
Hose Assembly 
Item  Part Number  Part Name  Qty 
12  245-5110  Hose As 
7I-7439  Hose Guard  265 cm (104.3 inch) (per hose assembly) 
124-2114  Coupling  4 (two per hose assembly) 
122-6869  Hydraulic Hose  221 cm (87 inch) (per hose assembly) 

Total assembled length of hose assembly (12) (each hose assembly) ... 2260 ± 20 mm (89 ± 0.8 inch)

Table 9
Hose Assembly 
Item  Part Number  Part Name  Qty 
13  245-5113  Hose As 
7I-7439  Hose Guard  292 cm (115 inch) (per hose assembly) 
124-2114  Coupling  4 (two per hose assembly) 
122-6869  Hydraulic Hose  243 cm (95.7 inch) (per hose assembly) 

Total assembled length of hose assembly (13) (each hose assembly) ... 2480 ± 20 mm (97.6 ± 0.8 inch)

Table 10
Hose Assembly 
Item  Part Number  Part Name  Qty 
14  245-5116  Hose As 
7I-7439  Hose Guard  213 cm (83.9 inch) (per hose assembly) 
153-0785  Permanent Coupling As  4 (two per hose assembly) 
161-1833  Hydraulic Hose  150 cm (59.1 inch) (per hose assembly) 

Total assembled length of hose assembly (14) (each hose assembly) ... 1570 ± 15 mm (61.8 ± 0.6 inch)

Table 11
Hose Assembly 
Item  Part Number  Part Name  Qty 
18  260-8278  Hose As 
7I-1024  Hose Guard  123 cm (48.4 inch) (per hose assembly) 
124-2119  Permanent Coupling As  2 (one per hose assembly) 
124-2150  Permanent Coupling As  2 (one per hose assembly) 
122-6878  Hydraulic Hose  105 cm (41.3 inch) (per hose assembly) 

Total assembled length of hose assembly (18) (each hose assembly) ... 1130 ± 15 mm (44.5 ± 0.6 inch)

Table 12
Specification for 418-5071 Boom Cylinder Lines Gp 
Item  Qty  Part  Specification Description 
Sharp corners at the cutting edge of each cable strap shall not be allowed. 
32  8T-4196 Bolt  Torque to 32 ± 6 N·m (283 ± 53 lb in)

Return Lines Group



Illustration 6g03803057
260-7870 Boom Cylinder Lines Gp


Illustration 7g03803088
248-9838 Return Lines Gp (REAR)


Illustration 8g03803110
260-7869 Front Lines Gp (FRONT)

  1. Before installing 418-5071 Boom Cylinder Lines Gp, remove the parts shown in Illustrations 1,2, and 3, and listed in Table 7.

    Table 13
    Standard Removal Parts 
    Item  Part Number  Part Name  Qty 
    D1  148-8355  Elbow As 
    D2  101-7398  Bolt 
    D3  212-5443  Tube As 
    D4  5K-9090  O-Ring Seal 
    D5  1P-3703  Rectangular Seal 
    E1  275-1675  Hose As 
    F1  260-8197  Hose As 
    F2  1P-3702  Rectangular Seal 
    F3  255-5683  Load Control Valve Gp (BOOM DRIFT RED, LINE RELIEF) 
    F4  1P-3703  Rectangular Seal 
    F5  4J-5268  O-Ring Seal 


    Illustration 9g03794375
    255-2077 Return Lines Gp

  2. Install 255-2077 Return Lines Gp. Refer to Table 2 for a list of the required parts. Refer to Illustration 9 for the location of the parts. Refer to Tables 14 through 16 for the required parts to build hose assemblies (1), (3), and (15). Refer to Table 17 for specifications.

Table 14
Hose Assembly 
Item  Part Number  Part Name  Qty 
194-0354  Hose As 
5K-9090  O-Ring Seal 
124-2123  O-Ring Face Seal Coupling 
124-2155  Coupling As 
122-6873  Hydraulic Hose  123.8 cm (48.7 inch) 

Total assembled length of hose assembly (1) ... 1360 ± 15 mm (53.5 ± 0.6 inch)

Table 15
Hose Assembly 
Item  Part Number  Part Name  Qty 
260-8086  Hose As 
124-2121  Permanent Coupling 
124-2153  Coupling 
122-6872  Hydraulic Hose  119 cm (46.9 inch) 

Total assembled length of hose assembly (3) ... 1290 ± 15 mm (50.8 ± 0.6 inch)

Table 16
Hose Assembly 
Item  Part Number  Part Name  Qty 
15  275-1418  Hose As 
153-0793  Permanent Coupling As 
153-0803  Permanent Coupling As 
7Y-5074  Hose Guard  85 cm (33.5 inch) 
161-1835  Hydraulic Hose  82 cm (32.3 inch) 

Total assembled length of hose assembly (15) ... 960 ± 15 mm (37.8 ± 0.6 inch)

Table 17
Specification for 255-2077 Return Lines Gp 
Item  Qty  Part  Specification Description 
260-8086 Hose As  Torque to 160 ± 16 N·m (118 ± 12 lb ft)

Pilot Lines Group



Illustration 10g03803949
433-8072 Pilot Lines Gp


Illustration 11g03803613
Main Control Valve


Illustration 12g03804284

  1. Before installing 255-1855 Pilot Lines Gp, remove the parts shown in Illustrations 10,11, and 12, and listed in Table 18.

    Table 18
    Standard Removal Parts 
    Item  Part Number  Part Name  Qty 
    G1  7K-1181  Cable Strap 
    G2  087-4531  Hose As 
    G3  087-5762  Hose As 
    G4  087-5772  Hose As 
    G5  330-2568  Hose As 
    G6  148-8433  Tee As 
    G7  148-8435  Tee As 
    G8  148-8336  Connector As 
    H1  148-8411  Plug 


    Illustration 13g03794666
    255-1855 Pilot Lines Gp

  2. Install 255-1855 Pilot Lines Gp. Refer to Table 3 for a list of the required parts. Refer to Illustration 13 for the location of the parts. Refer to Tables 19 through 21 for the required parts to build hose assemblies (2), (4), and (5).

Table 19
Hose Assembly 
Item  Part Number  Part Name  Qty 
4I-0818  Hose As 
6V-8397  O-Ring Seal 
146-3340  Permanent Coupling 
146-3358  Permanent Coupling 
135-7855  Hose  75.6 cm (29.8 inch) 

Total assembled length of hose assembly (2) ... 820 ± 7 mm (32.3 ± 0.3 inch)

Table 20
Hose Assembly 
Item  Part Number  Part Name  Qty 
087-6583  Hose As 
6V-8397  O-Ring Seal 
146-3340  Permanent Coupling 
135-7855  Hose  246.8 cm (97.2 inch) 

Total assembled length of hose assembly (4) ... 2530 ± 26 mm (99.6 ± 1.0 inch)

Table 21
Hose Assembly 
Item  Part Number  Part Name  Qty 
113-6738  Hose As 
6V-8397  O-Ring Seal 
146-3340  Permanent Coupling 
135-7855  Hose  305 cm (120.1 inch) 

Total assembled length of hose assembly (5) ... 3100 ± 31 mm (122.0 ± 1.2 inch)

Procedure For Installing the Load Control Valve Arrangement

Boom Lines Group



Illustration 14g03804361
237-3196 Auxiliary Hydraulic Lines Gp


Illustration 15g03804423
239-1626 Boom Lines Gp

  1. Before installing 237-3200 Boom Lines Gp, remove the parts shown in Illustration 14 or Illustration 15, and listed in Table 22.

    Table 22
    Standard Removal Parts 
    Item  Part Number  Part Name  Qty 
    J1  8T-4648  Bolt 
    J2  8T-4223  Hard Washer 
    J3  447-1708  Bolt 
    J4  451-2175  Hard Washer 
    K1  447-1707  Bolt 
    K2  451-2175  Hard Washer 


    Illustration 16g03794673
    237-3200 Boom Lines Gp

  2. Install 237-3200 Boom Lines Gp. Refer to Table 4 for a list of the required parts. Refer to Illustration 16 for the location of the parts. Refer to Tables 23 and 24 for the required parts to build hose assemblies (1) and (6). Refer to Table 25 for specifications.

Table 23
Hose Assembly 
Item  Part Number  Part Name  Qty 
5I-4393  Hose As 
149-8476  Permanent Coupling 
423-1972  Hose  83 cm (32.7 inch) 

Total assembled length of hose assembly (1) ... 900 ± 7 mm (35.4 ± 0.3 inch)

Table 24
Hose Assembly 
Item  Part Number  Part Name  Qty 
212-5419  Hose As 
6V-8397  O-Ring Seal  4 (two per hose assembly) 
146-3340  Permanent Coupling  4 (two per hose assembly) 
135-7855  Hose  423.8 cm (166.9 inch) 

Total assembled length of hose assembly (6) (each hose assembly) ... 4300 ± 43 mm (169.3 ± 1.7 inch)

Table 25
Specification for 237-3200 Boom Lines Gp 
Item  Qty  Part  Specification Description 
5I-4393 Hose As  Torque to 76 ± 4 N·m (56 ± 3 lb ft) 
7K-1181 Cable Strap  Sharp corners at the cutting edge of each cable strap shall not be allowed. 
278-6593 Hose As  Distance from the end of the hose assemblies to the center of the mounting bolts is 75.0 ± 5.0 mm (2.95 ± 0.20 inch)
8T-4196 Bolt  Distance from the end of the mounting pin to the center of the mounting bolts is 215.0 mm (8.46 inch)

Pilot Lines Group



Illustration 17g03804787
433-8072 Pilot Lines Gp


Illustration 18g03804858
433-8072 Pilot Lines Gp

  1. Before installing 255-1854 Pilot Lines Gp, remove the parts shown in Illustrations 17 and 18, and listed in Table 26.

    Table 26
    Standard Removal Parts 
    Item  Part Number  Part Name  Qty 
    J1  4I-1739  Hose As 
    J2  148-8435  Tee As 
    J3  148-8439  Tee As 


    Illustration 19g03794677
    255-1854 Pilot Lines Gp

  2. Install 255-1854 Pilot Lines Gp. Refer to Table 5 for a list of the required parts. Refer to Illustration 19 for the location of the parts. Refer to Tables 27 through 29 for the required parts to build hose assemblies (3), (4), and (5). Refer to Table 30 for specifications.

Table 27
Hose Assembly 
Item  Part Number  Part Name  Qty 
269-9944  Hose As 
7I-7439  Hose Guard  177 cm (69.7 inch) 
149-8474  Permanent Coupling 
149-8501  Permanent Coupling 
423-1971  Hose  349 cm (137.4 inch) 

Total assembled length of hose assembly (3) ... 3550 ± 35 mm (139.8 ± 1.4 inch)

Table 28
Hose Assembly 
Item  Part Number  Part Name  Qty 
437-0481  Hose As 
7I-7439  Hose Guard  156 cm (61.4 inch) 
149-8476  Permanent Coupling 
423-1972  Hose  116 cm (45.7 inch) 

Total assembled length of hose assembly (4) ... 1230 ± 13 mm (48.4 ± 0.5 inch)

Table 29
Hose Assembly 
Item  Part Number  Part Name  Qty 
285-2592  Hose As 
6V-8397  O-Ring Seal 
7I-7439  Hose Guard  216 cm (85 inch) 
149-8474  Permanent Coupling 
149-8493  Permanent Coupling 
423-1971  Hose  189.8 cm (74.7 inch) 

Total assembled length of hose assembly (5) ... 1960 ± 19 mm (77.2 ± 0.7 inch)

Table 30
Specification for 255-1854 Pilot Lines Gp 
Item  Qty  Part  Specification Description 
7K-1181 Cable Strap  Sharp corners at the cutting edge of each cable strap shall not be allowed. 
437-0481 Hose As  Torque to 76 ± 4 N·m (56 ± 3 lb ft)
148-8336 Connector As  Torque to 29 ± 3 N·m (257 ± 27 lb in)

Stick Cylinder Lines Group



Illustration 20g03805017
239-1876 Stick Cylinder Lines Gp

  1. Before installing 237-3199 Stick Cylinder Lines Gp, remove the parts shown in Illustration 20 and listed in Table 26.

    Table 31
    Standard Removal Parts 
    Item  Part Number  Part Name  Qty 
    L1  239-1877  Tube As 
    L2  1P-3705  Rectangular Seal 
    L3  8T-4648  Bolt 
    L4  453-1259  Bolt 
    L5  451-2175  Hard Washer 


    Illustration 21g03794833
    237-3199 Stick Cylinder Lines Gp

  2. Install 237-3199 Stick Cylinder Lines Gp. Refer to Table 6 for a list of the required parts. Refer to Illustration 21 for the location of the parts. Refer to Illustration 22 and Table 8 for specifications.


Illustration 22g03795044

Table 32
Specification for 237-3199 Stick Cylinder Lines Gp 
Item  Qty  Part  Specification Description 
268-7208 Tube As  Torque to 76 ± 4 N·m (56 ± 3 lb ft)
20  8T-4186 Bolt  Torque to 30 ± 7 N·m (266 ± 62 lb in)
22  8T-4196 Bolt  Torque to 32 ± 6 N·m (283 ± 53 lb in)
Distance from the center of the mounting pin to the support assembly 1500.0 ± 3.0 mm (59.06 ± 0.12 inch)
Orientation of the support assembly is 20 ± 3 degrees. 

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