Harrington Hoists and Cranes MR Trolley - (MR2) - Manual (Page 22)

Figure 3-12 Optional trolley installation method – up to 5 Ton
3.3.4 Optional Method for 8 to 20 Ton Trolley with hoist - refer to Figure 3-13.

ALWAYS install the trolley onto the beam before installing the hoist to the trolley.
Attempting to install a pre-assembled hoist and trolley onto the beam other than onto the beam end
(per Section 3.3.2) is dangerous and must not be attempted.
1) Assemble and adjust the trolley.
2) Separate trolley the trolley from the hoist by removing the Suspension Shaft(s), Adjusting spacers
and Trolley Fixing Shaft (8 and 10 Ton only). Reassemble the trolley without the hoist by
reinstalling the Suspension Shaft(s), Trolley Fixing Shaft and outer Adjusting Spacers. Place inner
spacers aside until step (6).
3)
Install the trolley on the beam by following steps (1) to (5) of Section 3.3.3.
4)
Use safe and proper rigging practices to secure the trolley side plates so that they will remain firmly
in place after the Suspension Shaft(s) and Trolley Fixing Shaft are removed (next step).
5)
Remove the Suspension Shaft(s), Trolley Fixing Shaft and outer Adjusting Spacers.
6)
Move the hoist up into position between the trolley side plates and line up the trolley and hoist's
Suspension Shaft holes.
7) Connect the hoist to the trolley by reinstalling the Suspension Shaft(s), Trolley Fixing Shaft,
Adjusting Spacers, Suspension Shaft Bolt(s), and Shaft Stopper Pin(s).
8) Ensure that:
 Shaft Stopper Pin(s) is(are) in hole A of the Suspension Shaft(s).
 Split Pins are installed properly.
 Trolley is properly adjusted (refer to Section 3.1.6).
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