Specifications

Maintenance
6-5
MORRIS Industries Ltd.
Trip Maintenance - Continued
400 Spring Cushion Trips
Main Bushing Replacement
In the event the pivot pin nylon bushings need
replacing, the following procedure can be used.
• Loosen spring retaining bolt.
• Slide a 1 1/4” wrench between the trip top and the
washer on the bolt.
• Tighten bolt, this will lift the casting off the base
taking the pressure off the pivot pin.
• Remove cotter pin from retaining pin and remove
retaining pin.
• Remove pivot pin from casting. To dismantle the
spring, simply unscrew the spring retaining bolt.
Note: Bolt is 8 1/4” long.
• Push casting down by lifting up on shank or by
using a prybar.
• Remove the old bushings by pushing out towards
the inside of the trip.
• Install the new bushings.
Reverse the above procedure to reassemble trip.
Note: Care must be taken when reassembling the
pivot pin not to shear the shoulder off the
nylon bushings.
Note: Torque spring retaining bolt to 75 ft. lbs.
once trip is reassembled.
IMPORTANT
Re-torque bolts after initial 50 hours.
Check tightness periodically thereafter.
Torque Bolts to 75 ft. lbs.
DANGER
Care must be taken when replacing any trip
components as the spring is under pressure.