Jack Replacement, Head End - Stryker 747 Manual De Mantenimiento

JACK REPLACEMENT, HEAD END

Tools Required:
• 1/2" Socket with Extension
• 3/8" Drive Ratchet
• 3/8" Drive Torque Wrench (ft-lb)
Procedure:
1 . Remove the litter from the stretcher . See "Litter Top Removal" on
2 . Using a 1/2" socket with extension and a 3/8" drive ratchet, remove the two hex head screws that hold the jack
base to the stretcher base frame . When reinstalling, torque the screws to 11 ± 5 ft-lb .
3 . Remove the two hex head screws that hold the jack reservoir clamp to the base frame and remove the clamps .
4 . Lift straight up on the pump connecting rod and disconnect the pump piston from the connecting rod . When
reinstalling, torque the screws to 13 ± 2 ft-lb .
5 . Disconnect the pump pedal swivel from the release pedal mounting plate .
6 . Remove the head end release rod from the release valve assembly .
7 . Using a 1/2" socket with extension, remove the two hex head screws that hold the jack base to the stretcher base
frame . When reinstalling, torque the screws to 13 ± 2 ft-lb .
8 . Remove the jack assembly .
9 . To reinstall the jack, install the bolts on the jack and reservoir clamp but do not tighten them fully .
10 . Reinstall the pump connecting rod and release rod .
11 . Depress the pump pedal fully (to the floor) . This will properly locate the jack onto the base frame .
12 . Tighten the bolts on the jack and reservoir clamp . Torque all bolts to 13 ± 2 ft-lb .
13 . With the assistance of another person, reinstall the litter top onto the jack shafts .
14 . Torque the hex head screws on the support tube weldments to 11 ± 5 ft-lb .
15 . Pump up the litter and apply weight to verify the jacks hold and do not drift .
16 . Verify proper operation of the unit before returning it to service .
Note:
The jack descent rate is set at the factory and adjustment is not recommended .
www.stryker.com
Service Information
0747-009-006 REV J
page 1-26 .
Return To Table of Contents
English
1-21