We reserve the right to make changes in design or add improvements without incur-
ring the obligation to make such changes in equipment previously manufactured.
H6030
PARTS-SERVICE
GRAM
Subject: Full Radius Mast Rollers for the Vista 3-Stage
It has been determined, that interference will occur when installing the full radius load rollers P/N
1333649 on the Vista 3-stage mast. When a relieved profile load roller is replaced by a full radius load
roller, the fillet weld at the top of the intermediate channel will cause the interference.
(Ref: Parts and Service Gram I-F-75 R2)
INTERCHANGEABILITY:
Refer to attached mast sketches:
* Page two, 70-110XL
* Page three, 135-155XL
Masts can be altered by grinding a radius in the fillet weld per referenced sketches to eliminate roller inter-
ference.
PARTS STOCK:
Not affected
EFFECTIVE SERIAL NUMBERS:
70-120XL 2-Stg.
70-120XL F.L.
70-120XL 3-Stg.
135-155XL 2-Stg.
135-155XL 3-Stg.
IF00079
May 20, 1993
S,H,E70-155XL
A510V-2115N and A510D-3644N
A512V-1748N
A511D-5208N
A513D-2647N
A514D-2810N
