Stryker Gynnie OB-GYN 1061, Maintenance Manual

Page: 15 / 87

Service Information
14
HYDRAULIC VALVE REPLACEMENT
Required Tools:
3/8” Open End Wrench Stiff Wire (with bent, pointed end) Small Needle Nose Pliers
1/2” Diameter Rod Torque Wrench (with Ft. Lbs. adjust.)
Replacement of the Poppet Valve:
WARNING
To avoid personal injury or damage to the stretcher, remove the litter and the base hood with the assistance
of another person before beginning service on the jacks. Lower the jack rod completely to relieve the pressure
on the pump piston side of the jack. This will prevent large hydraulic fluid loss and possible damage when
the base plugs are removed.
1. Remove the base plug (D) and the seal (L).
2. Remove the compression spring (C).
3. Using a small needle nose pliers, remove the poppet (F).
4. Install the new poppet (F).
5. Install the compression spring (C).
6. Install the seal (L) and the base plug (D) and tighten to 10 foot−pounds torque.
7. Pump up the jack to the maximum height. Apply weight and ensure the jack holds its position and there
are no hydraulic leaks before replacing the base hood and the litter.
ITEM PART NO. PART NAME
A 45−966 O−Ring
B 45−967 O−Ring
C 390−2−134 Conical Comp. Spring
D 715−1−301 Base Plug
E 715−1−309 Valve Plug
F 715−1−341 Poppet
H 715−100−325 Pump Replacement Ass’y
J 926−20−153 Check Valve
K 926−20−154 Seal
L 926−20−156 Seal
M 2025−700−26 Valve Assembly
N 5050−70−50 P.C. Valve
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