Hyster C176 User manual

Hyster C176 (R40EH) Forklift

LIFT CYLINDERS
ALL MODELS, EXCEPT
H8.00-12.00XM (H170-280HD) [F007, G007];
H13.00-16.00XM (H300-360HD) [E019, F019];
H10.00-12.00XM-EC (H360HD-EC) [E019, F019];
H20.00-32.00F (H440-700FS) [E008];
H36.00-48.00E (H800-1050E) [D117];
H3.50-5.50XM (H70-120XM) [K005, L005];
S3.50-5.50XM, S5.50XMS (S70-120XM,
S120XMS) [E004, F004]
PART NO. 910119 4000 SRM 135

SAFETY PRECAUTIONS
MAINTENANCE AND REPAIR
•When lifting parts or assemblies, make sure all slings, chains, or cables are correctly
fastened, and that the load being lifted is balanced. Make sure the crane, cables, and
chains have the capacity to support the weight of the load.
•Do not lift heavy parts by hand, use a lifting mechanism.
•Wear safety glasses.
•DISCONNECT THE BATTERY CONNECTOR before doing any maintenance or repair
on electric lift trucks.
•Disconnect the battery ground cable on internal combustion lift trucks.
•Always use correct blocks to prevent the unit from rolling or falling. See HOW TO PUT
THE LIFT TRUCK ON BLOCKS in the Operating Manual or the Periodic Mainte-
nance section.
•Keep the unit clean and the working area clean and orderly.
•Use the correct tools for the job.
•Keep the tools clean and in good condition.
•Always use HYSTER APPROVED parts when making repairs. Replacement parts
must meet or exceed the specifications of the original equipment manufacturer.
•Make sure all nuts, bolts, snap rings, and other fastening devices are removed before
using force to remove parts.
•Always fasten a DO NOT OPERATE tag to the controls of the unit when making repairs,
or if the unit needs repairs.
•Be sure to follow the WARNING and CAUTION notes in the instructions.
•Gasoline, Liquid Petroleum Gas (LPG), Compressed Natural Gas (CNG), and Diesel fuel
are flammable. Be sure to follow the necessary safety precautions when handling these
fuels and when working on these fuel systems.
•Batteries generate flammable gas when they are being charged. Keep fire and sparks
away from the area. Make sure the area is well ventilated.
NOTE: The following symbols and words indicate safety information in this
manual:
WARNING
Indicates a condition that can cause immediate death or injury!
CAUTION
Indicates a condition that can cause property damage!

Lift Cylinders Table of Contents
TABLE OF CONTENTS
Safety Procedures When Working Near Mast.................................................................................................. 1
General ............................................................................................................................................................... 5
Description ......................................................................................................................................................... 5
Lowering Control Valve................................................................................................................................. 5
Cylinders (General) ....................................................................................................................................... 8
Cylinders (H520-620B, H700-800A) ............................................................................................................. 8
Retainer, Install......................................................................................................................................... 8
Cylinders (H360-460B).................................................................................................................................. 10
Cylinders (Two-Speed)................................................................................................................................... 12
Lift Cylinder Repair........................................................................................................................................... 14
Lift Cylinder Removal Without Removing Mast..........................................................................................14
Standard Masts With Main Lift Cylinder Fastened to Crossmember of Inner Mast............................ 14
Standard and Full Free-Lift Masts With Lift Cylinder Fastened to Crosshead ................................... 14
Masts That Have Two Cylinders, Main Lift Cylinder and Free-Lift Cylinder ...................................... 14
Disassemble ................................................................................................................................................... 16
Assemble ........................................................................................................................................................ 16
Lift Cylinder Installation in Mast ................................................................................................................ 18
Standard Masts With Main Lift Cylinder Fastened to Crossmember of Inner Mast............................ 18
Standard and Full Free-Lift Masts With Lift Cylinder Fastened to Crosshead ................................... 18
Chevron-Style Packing.................................................................................................................................. 18
Chevron-Style Packing Installation on Piston......................................................................................... 19
Chevron-Style Packing Installation in Packing Gland ........................................................................... 21
Lift Cylinders for VISTA®Masts....................................................................................................................... 22
Description ..................................................................................................................................................... 22
Lowering Control Valve............................................................................................................................. 22
Remove ........................................................................................................................................................... 24
Disassemble ................................................................................................................................................... 25
Assemble ........................................................................................................................................................ 26
Install ............................................................................................................................................................. 27
Main Lift Cylinders................................................................................................................................... 27
Free-Lift Cylinder ..................................................................................................................................... 27
Lift System Leak Check .................................................................................................................................... 28
Specifications...................................................................................................................................................... 29
Troubleshooting.................................................................................................................................................. 30
This section is for the following models:
All Models, ExceptH8.00-12.00XM (H170-280HD) [F007, G007];
H13.00-16.00XM (H300-360HD) [E019, F019];
H10.00-12.00XM-EC (H360HD-EC) [E019, F019];
H20.00-32.00F (H440-700FS) [E008];
H36.00-48.00E (H800-1050E) [D117];
H3.50-5.50XM (H70-120XM) [K005, L005];
S3.50-5.50XM, S5.50XMS (S70-120XM, S120XMS) [E004, F004]
©2003 HYSTER COMPANY i

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"THE
QUALITY
KEEPERS"
HYSTER
APPROVED
PARTS

4000 SRM 135 Safety Procedures When Working Near Mast
Safety Procedures When Working Near Mast
The following procedures must be used when inspect-
ing or working near the mast. Additional precautions
and procedures can be required when repairing or re-
moving the mast. See the correct Service Manual sec-
tion for the specific mast being repaired.
WARNING
Mast parts are heavy and can move. Distances
between parts are small. Serious injury or
death can result if part of the body is hit by
parts of the mast or the carriage.
• Never put any part of the body into or under
the mast or carriage unless all parts are com-
pletely lowered or a safety chain is installed.
Also make sure that the power is OFF and the
key is removed. Put a DO NOT OPERATE tag
in the operator’s compartment.
• Be careful of the forks. When the mast is
raised, the forks can be at a height to cause
an injury.
• Do NOT climb on the mast or lift truck at any
time. Usealadderorpersonnellifttowork
on the mast.
• Do NOT use blocks to support the mast weld-
ments nor to restrain their movement.
• Mast repairs require disassembly and re-
moval of parts and can require removal of
the mast or carriage. Follow the repair pro-
cedures in the correct Service Manual for
the mast.
WHEN WORKING NEAR THE MAST ALWAYS:
1. Lower the mast and carriage completely. Push
the lift/lower control lever forward and make
sure there is no movement in the mast. Make
sure that all parts of the mast that move are
fully lowered.
OR
2. If parts of the mast must be in raised position,
install a safety chain to restrain the moving parts
of the mast. Connect moving parts to a part that
does not move. Follow these procedures:
a. Put the mast in a vertical position.
b. Raise the mast to align the bottom cross-
member of the inner weldment with a cross-
member on the outer weldment. See Fig-
ure1,Figure2,andFigure3.
c. Use a 12 mm (0.5 in.) minimum safety chain
with a hook to fasten the crossmembers to-
gether so that the movable member cannot
lower. Put the hook on the back side of the
mast. Make sure the hook is completely en-
gaged with a link in the chain. Make sure
the safety chain does not touch lift chains or
chain sheaves, tubes, hoses, fittings or other
parts on the mast.
d. Lower the mast until there is tension in the
safety chain. If running, stop the engine. Ap-
ply the parking brake. Install a DO NOT RE-
MOVE tag on the safety chain(s).
e. Install another safety chain 12 mm (0.5 in.)
minimum between the top or bottom cross-
member of the carriage and a crossmember
on the outer weldment.
3. Apply the parking brake. After lowering or re-
straining the mast, shut off the power and re-
move the key. Put a DO NOT OPERATE tag in
the operator’s compartment.
1

Safety Procedures When Working Near Mast 4000 SRM 135
1. INNER WELDMENT
2. OUTER WELDMENT 3. HOOK 4. CARRIAGE
Figure 1. Mast
2

4000 SRM 135 Safety Procedures When Working Near Mast
1. INNER WELDMENT
2. TILT CYLINDERS 3. HOOK
Figure 2. Mast
3

Safety Procedures When Working Near Mast 4000 SRM 135
Figure 3. Two-Stage, Free-Lift, Three-Stage, and Four-Stage Masts
4

4000 SRM 135 Description
Legend for Figure 3
A. TWO-STAGE MAST
B. FREE-LIFT MAST C. THREE-STAGE MAST D. FOUR-STAGE MAST
1. OUTER WELDMENT
2. INNER WELDMENT
3. INTERMEDIATE WELDMENT
4. FIRST INTERMEDIATE WELDMENT
5. HOOK
6. FREE-LIFT CYLINDER
7. CROSSMEMBER
8. CROSSMEMBER
General
This section has the description for lift cylinders used
in masts and the instructions for their repair. There
are many different sizes of lift cylinders used in Hys-
ter Company lift trucks. The operation and repair
procedures for the different lift cylinders are simi-
lar. The illustrations in this section are for typical
lift cylinders. All of the variations in lift cylinders
used in lift trucks are not shown. A section for Lift
Cylinders for VISTA®Mastsisincludedlaterinthis
section.
Description
All lift cylinders are single-acting cylinders. See Fig-
ure 4. The hydraulic force is applied only in one di-
rection. When hydraulic oil enters one end of the lift
cylinder, the hydraulic force extends the piston rod.
When the force is removed, the weight of the carriage
and inner mast retracts the piston rod.
A common maintenance problem is the repair of oil
leaks from the seals and wiper around the piston rod.
If the bore of the shell of the lift cylinder is damaged
andcannotberepaired,theliftcylindermustbere-
placed.
LOWERING CONTROL VALVE
A lowering control valve is installed in the inlet port.
See Figure 5. It permits easy entry of hydraulic oil
into the cylinder, but gives a restriction when the rod
is retracted. This restriction gives limits to the speed
that a load on the forks can be lowered.
There are two types of lowering control valves. Both
types have the same function and similar operation.
The most common type of valve has a design that
has good operation using large flows and lower pres-
sures. Some lift trucks have a lift system design us-
ing higher pressures and a lower flow. These systems
need a different type of lowering control valve.
The most common type of lowering control valve uses
these parts: (1) a special fitting for the valve body, (2)
a spring, and (3) a special washer. There is a varia-
tion in the shapes of the special washer. Different
lift cylinders use different shapes of special washers.
The volume of the hydraulic oil flowing through the
inlet port controls the shape of the special washer.
(A typical shape of a special washer is shown in Fig-
ure 5.) When the piston rod is lowered, the oil flow
pushes against the special washer and spring. When
the oil flow reaches the limit, the special washer is
moved against the special fitting. The oil then flows
only through the hole in the center of the special
washer. This restriction permits the piston rod to
lower only at a maximum controlled speed.
The other type of lowering control valve uses these
basic parts: (1) valve body, (2) spring, (3) washer, (4)
cylinder, (5) orifice sleeve, (6) plunger, and (7) main
sleeve. The orifice sleeve position is controlled com-
pletely by oil flow. The plunger position is controlled
by oil pressure and spring tension. During lifting,
oil entering the lift cylinder goes through the center
of the main sleeve to the large holes. The oil flow
through the plunger and bore moves the orifice sleeve
to the end of the plunger. The flange of the orifice
sleeve is then aligned with the large part of the bore
in the body. This alignment lets the oil flow past the
orifice sleeve to the cylinder.
5

Description 4000 SRM 135
A. INSTALLED B. NOT INSTALLED
1. LOWERING CONTROL VALVE
2. PISTON
3. BEARING
4. CHECK VALVE
5. SHELL
6. NYLON RING
7. RETAINER
8. WIPER SEAL
9. BACKUP RING
10. O-RING
11. ROD
12. SINGLE-LIP SEAL
Figure 4. Two-Speed Lift Cylinder
During lowering, oil from the lift cylinder moves the
orifice sleeve. The orifice sleeve moves away from the
larger inner diameter area of the bore in the valve
body. This movement makes a restriction to the oil
flow. As the pressure increases, the plunger begins
to move against the spring. The movement begins
to close the openings of the large holes in the main
sleeve. Additional pressure will push the plunger
against the main sleeve to close the large holes com-
pletely. All the oil must then go through the small
holes to the center of the main sleeve. This restric-
tion permits the piston rod to lower only at a maxi-
mum controlled speed.
6

4000 SRM 135 Description
A. LOW PRESSURE DESIGN
B. LOWERING
C. RESTRICTED FLOW
D. HIGH PRESSURE DESIGN
E. LIFTING
F. FREE FLOW
1. SPECIAL FITTING OR VALVE BODY
2. SPRING
3. SPECIAL WASHER
4. CYLINDER
5. ORIFICE SLEEVE
6. PLUNGER
7. MAIN SLEEVE
Figure 5. Lowering Control Valves
7

Description 4000 SRM 135
CYLINDERS (GENERAL)
Standard masts use a single-stage lift cylinder.
Most three-stage and four-stage masts use two sin-
gle-stage lift cylinders. A single-stage lift cylinder
has one piston rod. See Figure 6.
Most full free-lift masts and some three-stage masts
use a two-stage lift cylinder. A two-stage lift cylin-
derhastwotelescopicpistonrods.SeeFigure7.The
two-stage lift cylinder operates similar to a one-stage
lift cylinder. Hydraulic pressure pushes the primary
(larger) piston rod from the cylinder first because
it has a larger diameter. The secondary piston rod
moveswiththeprimarypistonrod. Whenthepri-
mary piston rod reaches the limit of its stroke, the
secondary piston rod extends from the primary pis-
ton rod.
Spacers are used in some cylinders to give a limit to
the stroke of the piston rod. Worn spacers must be
replaced with the same size spacer.
Most of the lift cylinders use a single-lip seal assem-
bly to prevent hydraulic oil leaks past the piston
and past the retainer. See Figure 4. There are
many lift cylinders in use that have an older design
chevron-style packing. The chevron-style packing
can be replaced with a seal kit that has the newer
single lip seal and an adaptor. There are no replace-
ments of single lip seals for chevron-style packing
for lift trucks over 7,000 kg (15,000 lb) capacity.
Lift cylinders and other hydraulic parts can have in-
ternal leaks. Internal leakage will increase as the
temperature of the hydraulic oil increases. The in-
ternal leak rate of the hydraulic system is normally
checked after every 1000 hours of operation. See Lift
System Leak Check for test procedures and leakage
rates within the specifications.
During operation, some leakage of hydraulic oil can
movepastthepistonsealtotherodsideofthepis-
ton. A small leakage is permitted if the internal leak
rate of the hydraulic system is not greater than the
specification. An internal check valve is installed in
the piston of many of the lift cylinders. When the rod
extends, the pressure increases more quickly on any
oil in the rod end of the cylinder. The hydraulic oil
transfers through the check valve to the piston end of
the cylinder. This action prevents hydraulic damage
to the wiper seal. See Figure 8. Lift cylinders that
do not have an internal check valve have a drain line
on the outside of the cylinder shell.
CYLINDERS (H520-620B, H700-800A)
The rod side of the lift cylinder is used for the storage
of hydraulic oil on the H520-620B and H700-800A lift
trucks. This storage decreases the required size of
the hydraulic tank. When the piston raises in the
cylinder, the oil on the rod side of the piston trans-
fers to the hydraulic tank. When the piston lowers
inthecylinder,someoftheoiltransferstotherod
side of the cylinder. Approximately one half of the oil
in the bottom of the cylinder goes through the main
control valve to the rod side of the cylinder. See the
Main Control Valve of Service Manual for more
information. See Figure 9.
Retainer, Install
1. Install the retainer over the piston and into the
cylinder. Make sure the single-lip seal assembly,
the O-ring, and the backup ring are not damaged.
SeeFigure9.
2. Turn the retainer ring into the threads in the
cylinder. Turn the retainer ring until it is even
with the top of the cylinder.
3. Install the capscrews loosely.
4. The stroke of the cylinder rod can be adjusted by
turning the retainer ring one-half turn in either
direction.
5. Install and tighten the setscrew.
6. Tighten the capscrews to 36 to 46 N•m (27 to
34 lbf ft).
8

4000 SRM 135 Description
A. MAIN LIFT CYLINDER B. FREE-LIFT CYLINDER
1. WIPER RING
2. SINGLE-LIP SEAL
3. BEARING
4. O-RING
5. RETAINER
6. CHAIN ANCHOR MOUNT
7. HYDRAULIC LINE MOUNT
8. INTERNAL CHECK VALVE
9. ROD ASSEMBLY
10. SPACER
11. TO SENSING PORT FOR PHASING VALVE
PRESSURE
12. LOWERING CONTROL VALVE (ALL CYLINDERS)
13. PISTON RING
14. CUSHION RING
Figure 6. Single-Stage Lift Cylinders
9

Description 4000 SRM 135
1. WIPER RING
2. RETAINER
3. SEAL
4. SCREW (DO NOT
CHANGE LENGTH)
5. PRIMARY ROD
ASSEMBLY
6. SPACERS
7. BEARING
8. PISTON HALF (1
OF 2)
9. INTERNAL CHECK
VALVE
10. SINGLE-LIP SEAL
11. SECONDARY ROD
ASSEMBLY
12. O-RING
13. PLUG
Figure 7. Two-Stage Lift Cylinder
CYLINDERS (H360-460B)
The lift cylinders used in the H360-460B lift trucks
are displacement cylinders. The design and repairs
for these cylinders are similar to the other lift cylin-
der in this section. A displacement cylinder does not
have a piston or piston seal. The rod diameter is al-
most the same as the inside diameter of the cylin-
der. There are wear rings on the rod that are the
bearings between the rod and the walls of the cylin-
der. The wiper seal at the top of the cylinder is also
the high-pressure seal for these cylinders. The wiper
seal has chevron-style packing. See Figure 10.
A. INSTALLED B. NOT INSTALLED
1. POPPET
2. SPRING
3. SEAL
4. INLET AND
OUTLET PORT
5. SINGLE-LIP SEAL
6. O-RING
7. NYLON BACKUP
RING
Figure 8. Internal Check Valve and Single-Lip
Seal
10

4000 SRM 135 Description
A. LOWERING CONTROL VALVE
1. SETSCREW (1)
2. CAPSCREW (2)
3. RETAINER RING
4. SINGLE-LIP SEAL
ASSEMBLY
5. RETAINER
6. BACKUP RING
7. O-RING
8. CYLINDER SHELL
9. ROD
10. SPACER
11. PISTON
12. PISTON RING NUT
13. NYLON SETSCREW
14. SPRING
15. FLANGE
16. SPACER PLATE
17. SPACER
18. VALVEBODY
19. SPECIAL WASHER
Figure 9. Lift Cylinder for H700-800A
11

Description 4000 SRM 135
Figure 10. Displacement Cylinders
Legend for Figure 10
NOTE: OIL LEAKAGE IS NOT CONTROLLED BY
THE TORQUE ON THE PACKING GLAND. TIGHTEN
THE PACKING RETAINER TO STOP OIL LEAKS.
REPLACE CHEVRON-STYLE PACKING WHEN
PACKING RETAINER CANNOT COMPRESS PACK-
ING FURTHER TO CONTROL OIL LEAKS. DO NOT
TIGHTEN MORE THAN NECESSARY TO STOP OIL
LEAKS.
1. WIPER
2. NYLON RING
3. CHEVRON-STYLE
PACKING
4. BACKUP RING
5. O-RING
6. ROD HEAD
7. PACKING
RETAINER
8. PACKING GLAND
9. CYLINDER SHELL
10. INLET AND
OUTLET PORT
11. WEAR RING
CYLINDERS (TWO-SPEED)
Two-speed lift cylinders are single-stage lift cylinders
with a special valve and path for the hydraulic oil.
The lift cylinder is filled with oil on both sides of the
piston. For loadslessthan45%oftheratedcapacity,
the cylinder rod can be extended at high speed. When
the cylinder rod extends, the oil on the rod side of the
piston transfers to the bottom of the piston. When
the oil transfers,theincreasealmostdoublestheflow
of oil to thebaseofthecylinder.Thepumppressure
is applied to both sides of the piston. The area on the
bottom of the piston is greater than the rod side of
the piston. The difference in force pushes the piston
up the cylinder. See Figure 11.
For loads greater than 45% of capacity, the cylinder
rod extends at normal speed. A special valve senses
the increased oil pressure caused by the load. The
oil is returned from the rod side of the lift cylinder
to the hydraulic tank. All of the pump pressure is
applied to the bottom side of the piston. The cylinder
rod extends at a slower speed, but can lift a greater
load. The two-speed lifting system is used only with
standardmasts. Atwo-speedliftsystemisusedon
the following lift trucks:
S60-80B H150-250E
S125-150A H150-275H
H60-80C H250-300A
H300-350B P125-180A
H110-150F P150-200B
12

4000 SRM 135 Description
A. HIGH-SPEED OPERATION FOR NO LOAD OR LIGHT LOADS
B. NORMALOPERATIONFORRATEDCAPACITYLOADORHEAVYLOADS
1. FORCE
2. FROM HYDRAULIC PUMP 3. GREATER LIFTING FORCE 4. TO HYDRAULIC TANK
Figure 11. Two-Speed Lift Cylinders
NOTE: The maximum loads that the above models
will lift at high speed are shown on Table 1.
Table 1. Lift Trucks with Two-Speed Lift Cylinders
Model Load
S60-100B 1589 to 2043 kg (3500-4500 lb)
H60-80C 1589 to 2043 kg (3500 to 4500 lb)
H110-150F 1589 to 2043 kg (3500 to 4500 lb)
S125-150A 2270 to 2724 kg (5000 to 6000 lb)
H150-200ES, Standard Masts 2270 to 3087 kg (5000 to 6800 lb)
P125-180A, Standard Masts 2270 to 3087 kg (5000 to 6800 lb)
H150-250E, Heavy Duty Masts 3133 to 4041 kg (6900 to 8900 lb)
P125-180A, Heavy Duty Masts 3133 to 4041 kg (6900 to 8900 lb)
H250-300A 4540 to 4994 kg (10,000 to 11,000 lb)
This table shows the approximate maximum load that the mast will lift at high speed. Loads greater than
those shown will cause the mast to lift at normal speed. These loads will have a variation because of the
different attachments that can be installed on the lift truck.
13

Lift Cylinder Repair 4000 SRM 135
Lift Cylinder Repair
LIFT CYLINDER REMOVAL WITHOUT
REMOVING MAST
Removethecarriagebeforetheliftcylinder.Seethe
procedure described in the Masts section. If the mast
must be removed for repairs, then remove the lift
cylinder when the mast is disassembled. Remove the
lift cylinder from the mast as described in the follow-
ing paragraphs.
Standard Masts With Main Lift Cylinder
Fastened to Crossmember of Inner Mast
1. Fully lower the mast. Loosen, but do not discon-
nect the capscrew that fastens the cylinder rod to
the crossmember of the inner mast.
2. Clean the area next to the fittings that connect
the hydraulic lines to the lift cylinder. Put a
drain pan under the area where the hydraulic
lines will be disconnected. Disconnect the hy-
draulic lines and put a cap on each open fitting.
WARNING
Make sure the lifting mechanism has enough
capacity to lift the loads. See the Weight Guide
for lift cylinders in Table 2.
3. Connect a lifting mechanism to the inner mast.
Lift the inner mast approximately 300 mm
(12 in.). Fasten the inner and outer masts to-
gether at the crossmembers with a heavy chain.
Make sure that the inner mast cannot move.
Remove the lifting mechanism.
4. Connect a heavy-duty sling to the upper part of
the cylinder. Raise the lifting mechanism until
the sling is tight. Make sure the sling will not
slide.
5. Remove the capscrew and washer connecting the
piston rod to the inner mast. Remove the spacer.
CAUTION
Oil can come out of the cylinder fittings with
pressure when retracting the rod.
6. Loosen the cap on the lower fitting of the cylinder.
Manually retract the piston rod.
7. Remove the capscrew and the plate from the
lower side of the cylinder.
8. Raise the cylinder and move it away from the
mast. Move the lift cylinder to a position where
it can be disassembled.
Standard and Full Free-Lift Masts With Lift
Cylinder Fastened to Crosshead
1. Remove the lift chains and chain anchors from
the mast and the lift cylinder. Connect a sling
to the upper area of the lift cylinder. Raise the
lifting mechanism until the sling is tight. See
Figure 12 and Figure 13.
2. Remove the capscrews that connect the piston
rod to the crosshead.
3. Disconnect and remove the crosshead assembly
from the mast. Make a note of the shim arrange-
ment on the crosshead guide.
4. Clean the area next to the fittings that connect
the hydraulic lines to the lift cylinder. Put a
drain pan under the area where the hydraulic
lines will be disconnected. Disconnect the hy-
draulic lines and put a cap on each open fitting.
5. Remove the snap ring that connects the bottom
of the lift cylinder to the outer mast.
6. Raise the lift cylinder and move it away from the
mast. Move the lift cylinder to a position where
it can be disassembled.
Masts That Have Two Cylinders, Main Lift
Cylinder and Free-Lift Cylinder
1. Remove the free-lift cylinder as described in
the section above for removing a lift cylinder
fastened to a crosshead.
2. Remove the main lift cylinder as described in
the section above for removing a lift cylinder fas-
tened to an inner mast.
14