- Excavator:
- 320E (S/N: REE1-UP; TNJ1-UP; WBK1-UP; TEX1-UP; NAZ1-UP)
- 323E (S/N: RAP1-UP)
- 323F (S/N: PLB1-UP; XCF1-UP; YEJ1-UP)
- 323E (S/N: RAP1-UP)
- Work Tool:
- HYDRAULIC KIT (S/N: HKB1-UP)
Introduction
The Special Instruction, GEHS0338 is for the installation of the 346-3423 Pilot Lines Gp "Revision level -02". If you need more information about the installation of the Pilot Lines Gp on your machine, consult your Cat dealer.
Do not perform any procedure that is outlined in this publication without reading this article first.
Safety Section
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Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Cat dealer for replacement manuals. Proper care is your responsibility. |
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Personal injury or death can result from sudden work tool movement. Sudden movement of the work tool can cause injury to persons near the work tool. To prevent injury or death, make sure that the area around the work tool is clear of personnel and obstructions before operating the work tool. |
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| Illustration 1 | g00104545 |
Prevent the machine from movement. Park the machine on a level surface.
Attach a "Do Not Operate" warning tag or a similar warning tag to the start switch before you service the equipment. These warning tags (Special Instruction, SEHS7332) are available from your Caterpillar dealer.
Required Parts
| Parts List for 346-3423 Pilot Lines Gp Revision -02 | |||
|---|---|---|---|
| Item | Qty | Pt. No. | Part Name |
| (1) | 1 | 4I-1880 | Hose As |
| (2) | 4 | 4I-9523 | Marker Band |
| (3) | 2 | 4I-9526 | Marker Band |
| (4) | 2 | 6V-0852 | Dust Cap |
| (5) | 1 | 087-5770 | Hose As |
| (6) | 2 | 150-4027 | Tee As |
| (7) | 1 | 259-7430 | Solenoid Valve Gp |
| (8) | 1 | 342-3913 | Support |
| (9) | 1 | 354-3695 | Hose As |
| (10) | 1 | 363-6134 | Adapter As |
| (11) | 1 | 366-0971 | Hose As |
| (12) | 4 | 148-8378 | Elbow As |
| (13) | 2 | 148-8407 | Plug As |
| (14) | 2 | 164-5567 | Quick Disconnect Coupler As |
| (15) | 4 | 8T-4121 | Hard Washer |
| (16) | 4 | 8T-4195 | Bolt |
| (17) | 2 | 8T-4224 | Hard Washer |
| (18) | 2 | 8T-6870 | Bolt |
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| Illustration 2 | g02873016 |
346-3423 Pilot Lines Gp | |
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| Illustration 3 | g02873116 |
Location of 346-3423 Pilot Lines Gp | |
Installation Procedure
- Assemble pilot valve (7) to support (8) using two bolts (18) and two washers (17) .
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| Illustration 4 | g02873136 |
Pilot valve assembly (7) 259-7430 Solenoid Valve Gp (8) 342-3913 Support (10) 363-6134 Adapter As (12) 148-8378 Elbow As (13) 148-5407 Engine Ratings Electronic Control (17) 8T-4224 Hard Washer (18) 8T-6870 Bolt | |
- Assemble fittings (10) and (12), and plugs (13) into valve (7) as shown.
- Secure solenoid valve assembly (7) to medium pressure valve support (B) using four bolts (16) and four washers (15).
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| Illustration 5 | g02873138 |
Pilot valve assembly (A) 310-0165 Medium Pressure Valve Gp (B) 353-0907 Support As (4) 6V-0852 Dust Cap (6) 150-4027 Tee As (7) 259-7430 Solenoid Valve Gp (14) 164-5567 Quick Disconnect Coupler As (15) 8T-4121 Hard Washer (16) 8T-4195 Bolt | |
- Place one tee (6) into port "Pa1" of medium pressure valve (A). Assemble nipple (14) and dust cap (4) in center port of tee (6) .
- Place one tee (6) into port "Pb1" of medium pressure valve (A). Assemble nipple (14) and dust cap (4) in center port of tee (6) .
- Attach angled end of hose (1) to port "Pb1" of Medium pressure valve (A) .
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| Illustration 6 | g02873139 |
Pilot hoses (A) 310-0165 Control Valve Gp (1) 4I-1880 Hose As (7) 259-7430 Solenoid Valve Gp (9) 354-3695 Hose As | |
- Attach straight end of hose (1) to port "B1" of Solenoid valve (7) .
- Attach angled end of hose (9) to port "Pa1" of Medium pressure valve (A) .
- Attach straight end of hose (9) to port "B2" of Solenoid valve (7) .
- Wrap one white hose band (3) around each end of hose (5) .
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| Illustration 7 | g02874656 |
Pilot supply and tank hoses (2) 4I-9523 Marker Band (3) 4I-9526 Marker Band (5) 087-5770 Hose As (7) 259-7430 Solenoid Valve Gp (11) 366-0971 Hose As | |
- Attach straight end of hose (5) to port "T" of Solenoid valve (7). Route opposite end of hose (5) below machine main valve to pilot selector valve.
- Wrap two blue hose bands (2) around each end of hose (11) .
- Attach angled end of hose (11) to port "P" of Solenoid valve (7). Route opposite end of hose (11) toward front of machine and under the cab to pilot manifold.
- Locate pressure and tank hoses as shown.
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| Illustration 8 | g02696539 |
Machine frame. Bottom view (1) 7K-1181 Cable Strap (2) 4I-9523 Marker Band (3) 4I-9526 Marker Band (5) 087-5770 Hose As (11) 366-0971 Hose As (12) 148-8378 Elbow As | |
- Locate port "DR6" on machine control manifold (D). Remove existing 148-8407 plug and discard.
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| Illustration 9 | g02874957 |
Detail A. Tank line (D) 215-5037 Pilot Selector Valve (3) 4I-9526 Marker Band (5) 4I-0818 Hose As (12) 148-8378 Elbow As | |
- Place elbow (12) into port "DR6" of machine control manifold (D) .
- Attach hose (5) to elbow (12) at port "DR6" of machine control manifold (D).
- Attach hose (11) to elbow at port "PB1" of block (C) .
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| Illustration 10 | g02875063 |
Detail B. Pressure manifold block (C) 168-9759 Block (2) 4I-9523 Blue Marker Band (11) 4I-0995 Hose As | |
- Unless otherwise specified, tighten all hardware and fittings to standard torque.
ReferenceTorque Specifications, SENR3130, " Torque Specifications "