IF00079
PARTS-SERVICE
May 20, 1993
GRAM S,H,E70-155XL
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:
A510V-2115N and A510D-3644N
70-120XL 2-Stg. A512V-1748N
70-120XL F.L. A511D-5208N
70-120XL 3-Stg. A513D-2647N
135-155XL 2-Stg. A514D-2810N
135-155XL 3-Stg.
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
IF00079
Page 2
70-120
Left hand channel shown.
Grind marks must be in this direction.
Grinding instructions also
Grind 7mm/.276" fillet weld to radius
apply to right hand channel.
of 8.6mm/7.1mm .34"/.28" for Distance  A
No grind marks in this direction.
240mm
 A
9.449"
IF00079
Page 3
135 - 155
Grind marks must be in this direction.
Right hand channel shown.
Grind 7mm/.276" fillet weld to radius
Grinding instruction also apply
of 8.6mm/7.1mm .34"/.28" for Distance  A
to left hand channel
No grind marks in this direction.
184mm
 A
7. 244"