4.14 Electric Stretcher Potentiometer
Chapter 4: Removal, Replacement, and Adjustment Procedures
Page 4 - 42
TranStar® PC-100/PC-200/PC-300/PC-350/PC-400/PC-450/
PC-500/PC-550/TR-500/SG-500/OB-450/OB-550/EL-550
Series Stretcher Service Manual (man115re)
4.14 Electric Stretcher Potentiometer
Tools required:
Ratchet
T25 Torx®
1
head bit
¼" Allen™
2
wrench
½" open end wrench
Side cutters
6" straight edge
Removal
1. Raise and secure the head section of the stretcher to gain access to the
electric box.
SHOCK HAZARD:
Unplug the unit from its power source. Failure to do so could result in
personal injury and equipment damage.
2. Unplug the stretcher from its power source.
3. Using the ratchet and the T25 Torx® head bit, remove the two screws (A)
(see figure 4-17 on page 4-37) and lockwashers (E) (see figure 4-18 on
page 4-38) that secure the electric box cover weldment (C).
NOTE:
On the A version electric stretchers, the lockwashers are not installed.
4. Remove the electric box cover weldment (C).
5. Remove the potentiometer cable assembly connector (B) from P1 on the
control board (H) (see figure 4-19 on page 4-39) or (see figure 4-20 on
page 4-39).
6. Using the ½" open end wrench, remove the nut (H) that secures the
potentiometer cable assembly (A) to the electric box (M). The nut will
remain with the wiring assembly (see figure 4-21 on page 4-43) or
(see figure 4-22 on page 4-43).
7. Using the ratchet and the T25 Torx® head bit, remove the two screws (N)
and nuts that secure the potentiometer cable assembly (A) to the electric
box (M) (see figure 4-21 on page 4-43).
8. Remove the potentiometer cable assembly (A) from the electric box (M).
9. Using the side cutters, cut the wire ties (I) that secure the potentiometer
cable assembly (A) along the left side of the upper frame.
1. Torx® is a registered trademark of Textron, Inc.
2. Allen™ is a trademark of Industrial Fasteners, Inc.
