4.20 Electric Stretcher Knee Drive Assembly
Chapter 4: Removal, Replacement, and Adjustment Procedures
Page 4 - 62
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)
3. Using the ratchet and ½" socket, remove the two actuator mounting bolts
(A). Make sure you support the knee drive assembly.
4. Using the ratchet and T25 Torx® head bit, remove the ground screw (B)
that secures the ground strap (K) to the knee drive assembly (E).
5. Using the phillips head screwdriver, remove the four screws (F) and
washers (G) that secure the knee motor housing (J).
6. Remove the knee motor housing (J), and disconnect the electrical
connector.
7. Remove the O-ring (M) from the knee drive assembly (E).
CAUTION:
Do not overextend the retaining rings. If the retaining rings are
overextended, use new ones for the installation. Failure to do so could
result in equipment damage.
8. Using the retaining ring removal/installation tool, remove the retaining ring
(D) from the actuator mounting pin (C).
9. Remove the actuator mounting pin (C).
10. Remove the knee drive assembly (E).
Replacement
1. Install the actuator mounting pin (C) through the knee drive assembly (E)
and the dogleg weldment (N).
WARNING:
Do not use retaining rings that are overextended. Personal injury and
equipment damage could occur.
2. Using the retaining ring removal/installation tool, install the retaining ring
(D) onto the actuator mounting pin (C).
3. Install the O-ring (M) onto the knee drive assembly (E). Make sure the
O-ring is seated against the flange of the knee drive assembly (E).
4. Connect the electrical connector, and install the knee motor housing (J).
5. Using the phillips head screwdriver, install the four screws (F) and washers
(G) that secure the knee motor housing (J).