Sep `76
Suggestion 76-D-256
CCE-IHC Paystar F5070
20 Ton Dump Truck, 6x4, 71,000 GVWR
Method of Bleeding of Dump Hoist Cylinder
76-D-256
16. SUGGESTION NUMBER
15. SUBJECT OF SUGGESTION (Enter if Items 10B is "X'd")
(Enter if Item 10B is "X'd)
17. DESCRIPTION (Describe the Current Situation and your Suggestion for Change or improvement. Include where and how it can
be used, and identify estimated tangible/intangible benefits which would result from adoption.)
The present method of bleeding the hoist cylinder is:
1. Raise dump body high enough to expose hoist bleed access hole, located at the front center of truck body, to gain
access to the hoist bleed valve.
2. Personnel then climb onto the engine hood and lay across the roof of the cab, reach through the access hole, then
with pliers gradually loosen the air valve to bleed off trapped air.
Danger exists with this method. If, during this, operation, the truck body should accidentally fall, the person's body could
be pierced by the body target located at the forward end of the cab protector. This concealed danger to personnel could
be eliminated by providing a hoist bleed access hole with cover plate located on the front box (hoist housing). Old access
hole should be covered to prevent use. Now to bleed the hoist, personnel would stand inside the dump body, remove the
bleed hole cover plate, and the body would then be raised and the trapped air bled off. This new method of bleeding the
hoist cylinder would eliminate the possibility of serious injury by the dump body target if the dump body should
accidentally fall when bleeding the hoist cylinder.
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