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

IF00079
Page 2

70-120
Left hand channel shown.
Grinding instructions also
apply to right hand channel.

240mm
9.449"

No grind marks in this direction.

Grind marks must be in this direction.
Grind 7mm/.276" fillet weld to radius
of 8.6mm/7.1mm .34"/.28" for Distance “A”

“A”

IF00079
Page 3

Grind marks must be in this direction.
Grind 7mm/.276" fillet weld to radius
of 8.6mm/7.1mm .34"/.28" for Distance “A”

No grind marks in this direction.

135 - 155

Right hand channel shown.
Grinding instruction also apply
to left hand channel

184mm
7. 244"

“A”