TM 5-4310-452-14
4-77. LEVELING JACK REPLACEMENT.
This Task Covers:
a.
Removal of Front Leveling Jack
c.
Removal of Left or Right Rear Leveling Jack
b.
Installation of Front Leveling Jack
d.
Installation of Left or Right Rear Leveling Jack
Initial Setup:
Equipment Conditions:
Materials/Parts:
• Engine off.
• Eight self-locking nuts
• Trailer parked on flat, level surface.
• Parking brake set.
Tools/Test Equipment:
• Parking brake set.
• General mechanic's tool kit
• Trailer wheels chocked.
a. REMOVAL OF FRONT LEVELING JACK
WARNING
Ensure that compressor unit is securely supported before removing front leveling jack.
Compressor unit weighs 7,000 pounds and can crush you.
1.
Using blocks, support compressor unit under front of frame.
2.
Using handcrank (3), lower compressor unit onto suitable support.
3.
Remove 8 capscrews (11) and self-locking nuts (2) from 2 trunnion mounts (1). Discard self-locking nuts.
4.
Remove capscrew (8), bracket (10), and locking pin (9) from frame.
5.
Remove leveling jack (4) and trunnion mounts (1) from frame. Remove trunnion mounts from leveling jack.
6.
Remove capscrew (7), nut (5), and jack support shoe (6) from leveling jack (4).
b.
INSTALLATION OF FRONT LEVELING JACK
1.
Install jack support shoe (6) on leveling jack (4) with capscrew (7) and nut (5).
2.
Install trunnion mounts (1) on leveling jack (4).
3.
Position leveling jack (4) and trunnion mounts (1) in place on frame.
4.
Install 8 capscrews (11) and new self-locking nuts (2) in 2 trunnion mounts (1) and frame.
5.
Install capscrew (8), bracket (10), and locking pin (9) on frame.
6.
Using handcrank (3), raise compressor unit and remove support.
4-150
