Usage:
D25D (1HK),
D30D (3AJ),
D40D (2JJ),
D350D (9RF),
D400D (8TF),
D350E (9LR),
D400E (2YR),
D350E Series II (2XW),
D400E Series II (8PS) Articulated Truck
Reference: Service Magazine Article, November 3rd, 1997, Page 14, "Proper Welding Procedure on machines with Electronic Controls."
Reference: Service Magazine Article, February 22nd, 1999, Page 21, "Shielded Metal Arc Welding and Flux Cored Arc Welding Information."
Reference: Special Instruction, 1st July, 1991, SEHS6929-04, "Inspection, Maintenance and Repair of Rollover Protective Structures (ROPS) and Attachment Installation Guidelines."
Reference: Service Magazine Article, 14th June, 1999, Page 13, "New Door Gas Spring Has Improved Service Life."
Reference: Service Magazine Article, "Improved Hinge Available for Cab Door," in this Service Magazine.
Description of Change: A new 173-9312 Striker Plate with an additional gusset and increased adjustment can be installed. The new striker plate gives greater resistance to fatigue. The new striker plate is effective with D25D (1HK756-Up), D30D (3AJ448-Up), D350E Series II (2XW124-Up) and D400E Series II (8PS280-Up).
Adaptable To: The new striker plate is adaptable to D25D (1HK1-755), D30D (3AJ1-447), D350E Series II (2XW1-123) and D400E Series II (8PS1-279) Articulated Trucks. The new striker plate is also adaptable to first production of D40D, D350D, D400D, D350E and D400E Articulated Trucks.
NOTE: It is recommended that if the existing striker plate is replaced due to breakage, a new cab door hinge should also be installed as described in Service Magazine Article, "Improved Hinge Available for Cab Door", in this Service Magazine.
Installation Procedure
If required, carry out Steps 1 through 3 in the following procedure. This will allow greater access to perform the installation of the new striker plate.
Illustration 1.
Cab Door Mounting Arrangement.
1. With cab door (1) in the fully open position, disconnect gas spring (2) from cab door (1), and retain the hardware. Do not disconnect gas spring (2) from cab frame (3), shown in Illustration 1.
2. Disconnect strap (4) from cab door (1) and retain the two mounting bolts and two washers. Do not disconnect strap (4) from cab frame (3).
3. The cab door must be supported to prevent damage to cab door hinge (5).
4. Remove the door seal from the front and bottom portion of the cab. This will prevent damage to the door seal.
Illustration 2.
Striker Assembly and Existing Striker Plate.
5. Remove and retain striker assembly (6), nut (7), washer (8) and shims (9) shown in Illustration 2. Remove and discard existing striker plate (10).
NOTE: Make sure the surrounding area is well protected against damage from sparks, flames, etc. Do NOT burn or cut into the ROPS structure.
6. Clean and deburr the surface of cab frame (3).
Illustration 3.
New Striker Plate and Striker Assembly.
7. Position 173-9312 Striker Plate (11) and tack weld into position, shown in Illustration 3.
8. Weld 173-9312 Striker Plate (11) in position on cab frame (3), using two 5 mm (.2 in) pocket welds (C).
9. Install striker assembly (6) to 173-9312 Striker Plate (11) using nut (7), washer (8) and shims (9) retained in Step 5. Tighten nut (7) finger tight.
10. Install the door seal. Connect gas spring (2) to cab door (1), using the hardware retained in Step 1.
11. Connect strap (4) to cab door (1) using the two mounting bolts and two washers retained in Step 2.
Illustration 4.
Adjustment of the Cab Door and Striker Assembly.
12. Refer to Illustration 4 and adjust the cab door using the following procedure.
13. Close the cab door and locate striker assembly (6), so it is centered vertically in latch jaws (12). Ensure striker assembly (6) engages latch jaws (12) smoothly, and does not guide the cab door up or down.
14. Check for interference between striker assembly (6) and latch jaws (12) or latch case (13).
15. Adjust the position of striker assembly (6) by removing or adding shims (9).
16. Check for both the primary and secondary latched positions. The primary latched position is fully closed and fully latched. The secondary latched position is when the cab door is latched but the lock jaws are not in the primary latched position.
The primary latched position may not be achieved due to a high seal pressure or the position of striker assembly (6). Loosen nut (7) on 173-9312 Striker Plate (11) and adjust the position of striker assembly (6) until the primary latched position is achieved. Tighten nut (7) to the correct torque.
NOTE: Hinge adjustment may also be required to achieve the primary latched position, or the correct door seal pressure.
17. Check that the cab door is fully closed against the door seal with the latch in the primary latched position, not the secondary latched position.