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www.stryker.com 1900-009-002 REV B 1-39
English
CHECK VALVE REPLACEMENT (HYDRAULIC BASE)
TOOLS REQUIRED:
• Small Needle Nose Pliers
• (2) Bungee Cords (or equivalent)
• 1/4 in. Allen Wrench
• 3/8 in. Drive Torque Wrench
• 1/4 in. Hex Bit Socket
• Stiff Wire with bent, pointed end
• 1/2 in. Diameter Rod
PROCEDURE:
Note
Unless otherwise indicated, refer to Figure 11 (see page 1-36) for this procedure.
1. Raise the rails to the highest position and lower the litter to the lowest height. Apply the brakes.
2. Lift the base hood, separating the Velcro fasteners holding it to the base, and support it using bungee cords.
Note
The jack must be completely lowered to relieve the pressure on the pump piston side of the jack.
3. Using a 1/4 in. Allen wrench, remove the base plug (D) and the seal (L).
4. Using a 1/4 in. Allen wrench, remove the valve plug (E).
5. Using a stiff wire, with a bent, pointed end, remove the check valve (J) and seal (K).
6. Reinstall the seal flat in the bottom of its hole with a 1/2 in. diameter rod.
7. Install the new check valve with the beveled end up.
8. Using a 1/4 in. hex bit socket, torque the valve plug to 10 ft-lb (13.5 N-m).
9. Reinstall the valve plug and seal.
10. Using a 1/4 in. hex bit socket, torque the valve plug to 10 ft-lb (13.5 N-m).
11. Pump the jack to the maximum height. Apply weight to the stretcher and ensure the jack holds. Verify there are
no hydraulic leaks.
12. Remove the bungee cords and replace the base hood.
Service
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