Yard Machines Y60 Operations Instructions download pdf (Page 168)

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Figure 5-2. Welding Repair of Fork Assembly

in hermetically sealed containers, and must have

storage care normal to their type. If containers

have been opened for electrodes to become

exposed to normal (and above) atmospheric

humidity, the electrodes should be oven baked at

700° F. for 1 hour, minimum.

d. L.H. electrodes which have been in water

should be scrapped.

e. Remove only enough electrodes from the

container to perform the immediate job. Open

containers should be stored in heated storage

containers held at 200° to 300° F.

f. Clark Equipment employs little or no TIG

production welding at the Industrial Truck

Division (ITD).

g. Clark Equipment (ITD) employs MIG welding

extensively in production welding. Due to its

nature however, the welding instruction herein

(repair, as opposed to production welding) will

deal only with stick electrodes. The precautionary

and preparation instruction herein applies also to

MIG or TIG welding.

5-19. PREPARATION.

a. In natural ambient temperatures of 60° F. or

less, the machine (or component) should be “room

soaked”

overnight in 70° F. (+) to equate a

preheat. If this is impossible, the weld zone (area

6” to 10” each side) should be preheated to a

minimum of

l00

F. before welding. This

minimum temperature should be maintained on

the heat zone of each joint until that joint is

completed.

b. Repair of forks, hangers and guides require a

preheat of 150° to 250°F. Thermal sticks may be

used to check these weld heat-affected zones.

Tempil sticks are available from welding suppliers

in 50° increments from l00

F. through 2200° F.

Welding repair of fork proper is not recommended.

c. All cracks in the damaged area, or in areas

listed in paragraph 5-14 above, must be

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Yard Machines Y60 Operations Instructions Page 168

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