Chapter Five – Maintenance Procedures – Litter
99
5.4 KNEE SECTION (CONTINUED)
DRIVE SCREW AND NUT REPLACEMENT – KNEE MOTOR
(GATCH DRIVE SCREW KIT P/N 3000–300–715)
Required Tools:
5/16” Nut Driver 1/4” Nut Driver Standard Screwdriver
Hex Allen Wrench Side Cutters 7/16” Open End Wrench
7/16” Socket Wrench 3/16” Punch Hammer
A
B
C
Procedure: (This procedure will take approximately 45 minutes)
1. Remove the knee motor (see page 101). (The motor carriage can be removed with the motor still attached.
The motor cable must be disconnected from the litter if this is done – see steps 6 and 7, page 101).
2. Unhook hinge pin from the knee section.
3. Using a 5/16” nut driver from the top, remove the two screws (A) holding the motor carriage assembly to
the litter and the screw (B) holding the ground strap to the litter.
4. Using a 5/16” nut driver underneath the litter, remove the eight screws (B) holding the motor carriage as-
sembly to the litter assembly.
5. Lower the motor carriage assembly from underneath the litter.
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