Procedure to Replace the One Piece Window with the Two Piece Window on Certain Next Generation Hydraulic Excavators {7310} Caterpillar

Excavator

320 (S/N: BR61-UP; ZBN1-UP; YBP1-UP; YCP1-UP; HEX1-UP)

323 (S/N: BR91-UP; DWF1-UP; YBL1-UP; HDT1-UP; RAZ1-UP)

330 (S/N: WCH1-UP; KEL1-UP; PFN1-UP; LHW1-UP)

336 (S/N: SP91-UP; JHD1-UP; FEL1-UP; YBN1-UP; DKS1-UP; GDY1-UP)

Introduction

This Special Instruction contains the procedure to replace the one piece window and wiper with the two piece window and wiper on the machines listed above.

Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.

Reference Section

Reference: Specifications, SENR3130, "Torque Specifications"

Safety Section

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Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.

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Failure to follow all safety guidelines prescribed in this document and by governing authorities and regulatory agencies may result in severe injury or death of personnel or machine damage.

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Climbing equipment may be required to access this service point. Refer to the Operation and Maintenance Manual, "Mounting and Dismounting" topic for safety information.

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Do not operate the machine if any guards or covers are missing or inadequately secured. Personnel could be seriously injured or machine damage may occur.

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Observe the safe working load limits of all lifting and blocking devices and keep a safe distance from suspended/blocked loads. Personnel may be seriously injured or killed by falling loads.

Required Parts

Removal Procedure

Retain all parts for reassembly after installing the new window and wiper.

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Illustration 1	g06361778
(A) Wiper arm

1. Move wiper arm (A) away from the cab.
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   Illustration 2	g06361881

2. Remove hose (B) from wiper arm (A).
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   Illustration 3	g06361887

3. Remove bolt (C).
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   Illustration 4	g06361905

4. Remove wiper (D) from wiper arm (A).

   Note: Discard wiper after removal.

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   Illustration 5	g06361988

5. Remove bolts (F) and striker (E).
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   Illustration 6	g06362466

6. Remove screws (G), cover (H), and screen (J).
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   Illustration 7	g06362481

7. Remove brackets (K) and the screws securing the brackets in place.

   Note: Discard the brackets after removal.

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   Illustration 8	g06362484

8. Remove glass (L) and seal (M).

   Note: Discard the glass and seal after removal.

Installation Procedure

Installing Upper Window

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Illustration 9	g06362491
(11) 500-0791 Seal

1. Install seal (11).
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   Illustration 10	g06362501
   (8) 488-6583 Bracket As (15) 9X-2042 Screw

2. Install bracket assembly (8) and secure using two screws (15). Tighten to a torque of 12 ± 3 N·m (106.2 ± 26.6 lb in).
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   Illustration 11	g06362521
   (1) 109-1393 Bolt (7) 488-6548 Control Switch As

3. Install switch assembly (7) on top of bracket assembly (8) and secure using bolt (1). Tighten to a torque of 1.7 ± 0.4 N·m (15.05 ± 3.54 lb in).
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   Illustration 12	g06368727

4. Connect wiper harness assembly to switch (7). The harness is located behind panel (N). Remove panel (P), screw (R), and panel (N) to access the wiper harness.
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   Illustration 13	g06362512
   (2) 151-9557 Rubber Stop

5. Install stopper (2) on the left and right-hand side.
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   Illustration 14	g06362516
   (10) 500-0740 Bracket (14) 096-4007 Spacer (15) 9X-2042 Screw

6. Install bracket (10) on the left and right-hand side. On the left-hand side secure using two screws (15) and two spacers (14). On the right-hand side secure using two screws (15). Tighten all four screws to a torque of 12 ± 3 N·m (106.2 ± 26.6 lb in).
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   Illustration 15	g06362689

7. Remove the lower-left bracket from the new window group.
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   Illustration 16	g06362708

8. Remove rear header cover (S). Remove screws (T) and plugs (U).

   Note: Retain parts for reassemble after installation of the new window.

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   Illustration 17	g06362757
   (7) 488-6546 Cable As (15) 9X-2042 Screw

9. Install cable assembly (7) and secure the assist box using two screws (15). Tighten to a torque of 12 ± 3 N·m (106.2 ± 26.6 lb in).

10. Insert cable (W) into guide rail (V). Refer to Illustration 17.
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    Illustration 18	g06362780
    (5) 484-8019 Cab Window Gp

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    Illustration 19	g06362825

11. Install cable (W) to window group (5). Attach cable (W) with pin (Y) of window group (5).

    Note: Cable (W) is outside plate (X) of window group (5).

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    Illustration 20	g06362845

12. Insert cable (W) into guard rail (V) at the bottom of window group (5). Confirm that connecting part (Z) is inside guard rail (V).
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    Illustration 21	g06362859
    (5) 484-8019 Cab Window Gp

13. Install window group (5) onto the cab. Insert rollers (AA), at each corner bracket, into the guard rail.

14. Reinstall the lower-left bracket removed during Step 7. Ensure that the roller on the bracket is in the guard rail.
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    Illustration 22	g06362862

15. Remove two bolts (AB) from the assist box to allow it to operate when opening the window.

16. Install the brackets along the roof of the cab as follows:
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    Illustration 23	g06362864
    (9) 498-7783 Bracket (16) 9X-2044 Screw

    1. On the right-hand side, install bracket (9) and secure using two screws (16). Tighten to a torque of 12 ± 3 N·m (106.2 ± 26.6 lb in).
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       Illustration 24	g06362868
       (3) 334-6499 Bracket As (4) 430-5703 Shim (15) 9X-2042 Screw

    2. On the left-hand side, install bracket (3), shim (4), and secure using two screws (15). Tighten to a torque of 12 ± 3 N·m (106.2 ± 26.6 lb in).
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       Illustration 25	g06362874
       (12) 538-9725 Cover (13) 538-9803 Bracket (14) 096-4007 Spacer (16) 9X-2042 Screw

    3. On the back left pillar, install cover (12), bracket (13), two spacers (14), and secure using two screws (16). Tighten to a torque of 12 ± 3 N·m (106.2 ± 26.6 lb in).

17. After completing all the installation steps for the upper window group, ensure that there is no problem opening or closing the window. Ensure that the window locks into place when in the open or closed position.

Installing Lower Window

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Illustration 26	g06362920
(21) 500-0742 Stopper (23) 511-5967 Insulation

1. On each of the left and right-hand side bracket assemblies, install stopper (21) and insulation (23).
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   Illustration 27	g06362922
   (17) 346-8030 Seal

2. Install seal (17) on each of the bracket assemblies.
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   Illustration 28	g06362926
   (15) 9X-2042 Screw (18) 488-6493 Bracket As (19) 488-6494 Bracket As

3. Install right-hand side bracket (18), left-hand side bracket (19), and secure using four screws (15). Tighten to a torque of 12 ± 3 N·m (106.2 ± 26.6 lb in).
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   Illustration 29	g06362937
   (22) 511-5966 Seal

4. Install seal (22) along the bottom of the cab window frame.
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   Illustration 30	g06362939
   (20) 491-7724 Glass

5. Install glass (20) as shown.

6. Reinstall striker (E) and secure using bolts (F) removed in Step 5.

7. Reinstall cover (H), screen (J), and secure using screws (G) removed in Step 6.

Installing Two Piece Wiper

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Illustration 31	g06362973

1. Insert clip (AC) onto plate (AD).
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   Illustration 32	g06362967

2. Reassemble wiper arm (A) with plate (AD) and new two piece wiper (24). Secure with bolt (C) removed in Step 3.
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   Illustration 33	g06362975

3. Reconnect hose (B) removed in Step 2.
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   Illustration 34	g06362976

4. Move wiper arm (A) to the correct position again the cab.