Standard axle lift cylinder repair – Alamo HYDRO 15 User Manual

Page 94

HYDRO 15 (Service Manual) 10/06

Alamo Industrial

Section 5 - 20

STANDARD AXLE LIFT CYLINDER REPAIR

Install the new Piston retaining locknut

(figure 6 & 7 item 14)

onto the cylinder rod. (Note it is

not recommended that old locknut be reused). Before tightening the locknut down make certain
that piston is seated onto cylinder rod completely, this can be done by visually inspecting back side
of piston against shoulder of cylinder rod. Torque Piston Locknut

300 ft lbs

(based on 1” locknut).

When tightening piston locknut if support for cylinder rod is needed

(see figure 4)

Install the new nylon thread protector

(figure 6 item 2)

into the cylinder rod clevis

(figure 6 item

, Make certain the nylon thread protector is laying flat in the bottom of the threaded hole in the

clevis. Insert the setscrew

(figure 6 item 2)

into the clevis

(figure 6 item 3)

. Tighten the clevis

setscrew to

20 ft. lbs.

Clamp the barrel

(figure 8 item 5

) in vise using wood or other soft material to protect barrel

(see

figure 8)

DO NOT

tighten vise so tight that the barrel becomes distorted. Make note that the mark

that was made to identify which end of the barrel was the rod end is verified. Coat the inside of the
barrel with hydraulic oil.

Coat the piston, cylinder rod, cylinder head seals with hydraulic oil. Holding the rod, clevis,

cylinder head and piston as an assembly.

(see figure 7)

slide the assembly into the barrel. Make

certain that the insertion is on the same end as when it was removed

(Not required only

recommended).

Make certain the port of the cylinder head

(figure 8 item 9)

is pointing up as shown

this will make certain of port alignment when base end of cylinder is installed.

Figure 7

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Bench Vise

Cylinder Head

Clevis Set Screw

Piston

Cylinder Rod

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12345678

123456

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Piston Nut

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123

Chamfered side of piston

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123

Wood or other soft material

Bench Vise

Work Bench

(cyl head, clevis, cyl
rod & piston asy).

Figure 8