Optional axle level lift cylinder repair – Alamo HYDRO 15 User Manual

Page 98

HYDRO 15 (Service Manual) 10/06

Alamo Industrial

Section 5 - 24

OPTIONAL AXLE LEVEL LIFT CYLINDER REPAIR

Cylinder Removal: ( Axle Level Lift Cylinders -Optional)

Make Certain

axles and wings are in the lowered position before disconnection any compo-

nent

Make certain tractor is securely parked with brakes set

Make certain

tractor engine is in off

position and

key secured to prevent starting

. It is recommended mower be disconnected from

tractor and/or battery cable be removed from battery while repairs are being made.

Front and rear

of mower must be securely supported on strong jackstands before hydraulic lines or cylinder
mounting pins of the axle hydraulic assembly are disconnected.

Make certain

that all hydraulic pressure has been released from lines after wings and axles

have been completely lowered. This may require the tractor hydraulic controls and / or remote
control valve be worked to release hydraulic pressure.

NEVER disconnect any cylinder hydraulic

hose's or fittings if all

mower components (wings and deck) are not resting in the completely

lowered to the ground position or supported on jackstand position.

Do not remove cylinder pressure hose before the cylinder is dismounted from deck. Remove

the cylinder mounting pins

(figure 1 item 1)

, this allows the cylinder to be raised upward off the deck

mounting lug and the axle lug. Place a drain pan under the pressure hose to catch the hydraulic
oil when hose is disconnected. Drain cylinder and hose into drain pan. Plug the pressure hose and
cylinder to keep contamination out of them.

Plug all openings in cylinder before cleaning the cylinder. Base end of cylinder

(figure 1 item

will have two ports, Pressure in hose port

(figure 1 item 11)

and second plugged port on side

(figure 1 item 12)

which should still be in the cylinder base. The other port on the cylinder head is

the bypass pressure out port.

IMPORTANT!

These cylinders must be marked so the barrels will be rassembled with the

bypass grooves in the rod end, or the repair technician must keep in mind that the barrel end with
the groove machined into the ID must always be assembled with groove to the rod end.

Cylinder Dis-Assembly: (Axle Level Lift Cylinders Optional)

This is a Tie-Rod construction type cylinder, the four tie-rods

(figure 1 item 6)

and the 8 hex

nuts

(figure 1 item 7)

bolt the cylinder together. When these tie-rods are unbolted the cylinder will

come apart with minimum effort but

DO NOT

unbolt tie-rods until later.

It is a must

that the barrel

of the cylinder be marked as to which end is the cylinder rod end and which is the cylinder base
clevis end and the barrel reassembled on the same end as removed.

Place the cylinder in a bench vise

(figure 2)

, use pieces of wood or other soft material between

vise jaws and cylinder barrel.

DO NOT

over tighten vise and distort the shape of the barrel, vise

only needs to be tightened enough to hold cylinder.

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Figure 1

Pressure bypass Groove in ID of Barrel at the
cylinder head end.