Usage:
416C (1WR, 1XR, 4ZN, 5YN),
426C (1CR, 1ER, 1MR, 1NR, 1YR, 1ZR, 6XN, 7WN),
428C (2CR, 8RN),
436C (1FR, 1GR, 1PR, 1RR, 2AR, 2BR, 8TN, 9JN),
438C (1JR, 1TR, 2DR, 9KN) Backhoe Loaders
Description of Change: The window latches and keepers have been improved. The improved latches now turn to lock.
Adaptable To: The improved latches and keepers can replace the previous window latches and catches. See the Service Magazine article titled, "Backhoe Loader Window Latch Now Serviceable" in the June 1, 1999 edition on Page 4 for the parts of previous window latches and rods.
The improved latches can be installed back to first production. See Table 1 for manufacturing effectivity for the improved window latches.
Installation Procedure for Retrofit
Illustration 1. Improved Window Latch. Sand Tab (C).
1. Remove the Tab (C) on each 159-4950 Latch (1) and 159-4951 Latch (2) by sanding.
Illustration 2. Cross sectional view of former window latch.
2. Remove the six latches from the windows by removing Bolt (10). Remove the spacer from each window.
NOTE: The 129-8542 Retainers (9) on the outside of the windows will be reused. (See Illustration 2.)
3. Enlarge the existing hole in the 129-8542 Retainers (9) using a 15/64" Twist Drill or equivalent.
Illustration 3. The 122-8429 Rod (11) mounted on each door frame.
4. Remove the two 122-8429 Rods (11) from each door. Grind the surface flat along the door frame at (B). (See Illustration 3.)
5. Remove the two mounting screws on each of the four 104-9475 Plate Assemblies on the side cab windows.
Illustration 4. Installed Latch and Keeper on Door.
6. Install each of the 159-4950 Latches (1) and 159-4951 Latches (2) in the windows using the 136-4192 Bolts (6) and the 129-8542 Retainers (9) from the previous latches. The handles should operate so that each handle is latched in the 6 o'clock position. (See Illustration 4.)
Illustration 5. Door Latch.
7. For each window on the doors, assemble the Keeper (3) or (4), 154-5406 Plate (5), and two 131-3987 Screws (7). Position the plate and keeper using the latches as your guide. (See Illustration 4 and 5.)
8. Clamp the plate to the door frame. Remove the Keeper (3) or (4) and weld the 154-5406 Plate (5) to the door frame at the top and bottom (Positions A). Paint the plate using the 4C-5843 Black Paint and reinstall the keeper.
9. For the rear windows, align the keeper to the latch on each window frame. Mark the screw holes in order to install the mounting screws. Drill the marked holes using a 3 mm (.125 in) diameter bit. Install the 131-3987 Screws (7) and keepers.
NOTE: The rear windows may require the use of the 177-4877 Shims (8) to close properly.