Stryker Medical 9711030047, Maintenance Manual

Page: 11 / 154

10
Service Information
BRAKE RING REPLACEMENT
Brake Ring Part Number 715–1–61
Required Tools:
Phillips Screwdriver String or Bungee Cord Floor Jack, Small Crate (or equiv.)
Large Standard Screwdriver 3/32” Allen Wrench 11/16” Socket & Ratchet
5/8” Wrench Needle–Nose Pliers (2) 7/16” Wrenches
Procedure:
1. Remove the four Phillips screws holding the base hood to the frame. Lift and support the base hood using
string or bungee cord. Put the brake/steer pedal in the neutral position. Lift the end of the base needing
service until the casters are approximately 12” off the floor and support it with a jack or the equivalent.
2. Using a 3/32” Allen wrench, loosen the set screw holding the brake adjuster to the brake ring and turn
the adjuster clockwise to remove it.
3. Remove the wheel covers on both casters (see page 9).
4. Remove one of the caster assemblies (see page 8). On the other caster, use an 11/16” socket and ratchet
and a 5/8” wrench to remove the nut and bolt holding the wheel on the caster horn and remove only the
wheel.
5. Using needle–nose pliers, carefully squeeze and remove the spring between the brake cam and the
brake ring.
WARNING
The spring is tightly compressed. Use caution when removing it or personal injury could result.
6. If you are working on an end control base, remove the spring from the pump pedal.
7. Lower the brake ring and remove it from the base. Remove the brake pads and bushings and install them
on the new brake ring.
8. Reverse the above steps to install the new brake ring and reinstall the caster and wheel. Apply and re-
lease the brakes to ensure they operate properly. If adjustment is required, see page 15. Reinstall
the base hood.
BASE SIDE CONTROL PEDAL LINKAGE ADJUSTMENT
Required Tools:
3/8” Wrench 5/32” Hex Allen Wrench 7/16” Wrench
Bungee Cords
Adjustment Procedure:
1. Place 150–200 pounds on the litter and pump the litter up to full height.
2. Lift the base hood, separating the hood from the base frame. Using bungee cords, support the base hood.
3. Using a 3/8” wrench and a 5/32” hex Allen wrench, loosen the appropriate pedal linkage adjustment nut
until the jack stops ”drifting”. Raise the litter to full up.
4. Tighten the pedal linkage adjustment nut until the jack begins to slowly descend.
5. Using a 7/16” wrench, back the pedal linkage adjustment nut out four full turns. Raise the litter to full up.
6. Loosen the pedal linkage adjustment nut and ensure no drift occurs. If the jack drifts, repeat procedure.