4.18 Surgical Stretcher Articulating Headrest Gas Spring
Chapter 4: Removal, Replacement, and Adjustment Procedures
TranStar® PC-100/PC-200/PC-300/PC-350/PC-400/PC-450/
Page 4 - 57
PC-500/PC-550/TR-500/SG-500/OB-450/OB-550/EL-550
Series Stretcher Service Manual (man115re)
4
Replacement
1. Raise the headrest, put the
new
gas spring (B) into position, and loosely
install the jam nut (A).
WARNING:
Do not use a retaining ring that is overextended. Personal injury could
occur.
2. Lower the headrest (if necessary).
3. Using the retaining ring removal/installation tool, install the retaining
ring (C).
4. Check the adjustment of the articulating headrest gas spring (see
“Adjustment” on page 4-57).
5. Using the 17 mm open end wrench, tighten the jam nut (A).
Adjustment
1. Engage the push handle release to actuate the articulating headrest. Adjust
the gas spring so that when the push handle release is engaged, the gas
spring and the Mechlok®
1
device release at the same time.
CAUTION:
Do not rotate the gas spring rod with a clamping device. Damage to the
rod can occur.
2. If adjustment is necessary, use the ½" open end wrench, and loosen the jam
nut (A) that secures the gas spring (B) (see figure 4-28 on page 4-56).
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.
3. Using the retaining ring removal/installation tool, remove the retaining ring
(C) from the gas spring (B).
4. Rotate the gas spring (B) clockwise or counterclockwise to adjust.
1. Mechlok® is a registered trademark of P. L. Porter Company.