Ricon Mirage F9T, Service Manual

Page: 65 / 96

32DF9T02.C
4 - 26
10) Remove pivot plug from left-side of cylinder; this will release cylinder from carriage.
11) Carefully remove cylinder and trunnion assembly from carriage. Remove two bushings
from carriage frame. Loosen jam nut (located behind trunnion), and remove trunnion.
b. Hydraulic Cylinder Installation
NOTE: This procedure assumes that hydraulic cylinder has been removed.
1) Refer to Figure 4-24. Assemble jam nut and trunnion onto hydraulic cylinder rod. Install
two cylinder pivot bushings into carriage frame (with flanges to inside of frame).
2) Insert rear of hydraulic cylinder up into center of carriage, and push cylinder as far up and
back as possible. Swing front of cylinder up into carriage.
3) Align cylinder with bushings, and install pivot plug through carriage frame bushing and into
left-side of cylinder.
4) Install pivot fitting (with hydraulic Quick-Disconnect) through carriage frame bushing and
into right-side of cylinder.
5) Connect hydraulic hose to Quick-Disconnect fitting. Fasten hose retaining clamp to car-
riage.
6) Verify that hydraulic pump manual release valve is closed. Extend trunnion out to tabs on
lifting frame with manual backup pump.
7) Install two bushings in trunnion, and then insert keeper-plates through lifting frame tabs and
into trunnion bushings. Fasten keeper-plates to lifting frame.
8) Refer to HYDRAULIC BLEEDING section in Chapter II and bleed system.
9) Raise platform to maximum height possible using manual back-up pump. Compare this
height to vehicle floor height and note whether platform needs to be raised or lowered.
10) Insert a 3/8” hex wrench, or 3/8” hex drive, into end of cylinder rod. Turn rod clockwise to
raise platform, and counterclockwise to lower. Adjust to height needed for entry into vehi-
cle. Tighten jam nut against trunnion.
NOTE: It could be necessary to lift platform slightly to make turning of cylinder rod easier.
11) Refer to Platform Stow Height Adjustment section in Chapter II , and program stow height.
Program intermediate height, if necessary.
4. PRESSURE SWITCH ADJUSTMENT
An adjustable, pressure sensing, electrical switch is installed in the hydraulic line connected to the hy-
draulic cylinder. The switch detects the presence of a load, of 75 lbs or greater, on the deployed plat-
form. Correct adjustment of switch inhibits a loaded platform from stowing into vehicle, providing a
safety factor for lift users. Refer to the Pressure Switch Adjustment section in
Chapter II after doing
major repair or replacement of components in the hydraulic system.