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VALVE SERVICE

REPLACING SECTIONS
For clarification, the inlet cover [cover containing main

relief cartridge (18) ] will be called the left end of the valve

assembly.
Reassemble valve on a flat surface to insure proper

section alignment.
1. Remove handle assembly from section being

removed.

2. Remove valve from backhoe.
3. Thoroughly clean valve assembly.
4. Before disassembly, mark each section numerically to

avoid incorrect reassemble.

5. Remove four hex nuts and lock washers from right

(outlet cover) end of valve.

6. Slide outlet cover and each section off tie rods.
7. Replace sections as needed. Reassemble valve.
NOTE: Refer to “Replacing Section Seals” if seals need to

be replaced.

WARNING: Do not prelube O-ring section

seals prior to installation. Compression of

lubricants can distort valve causing spool

binding.

8. Torque stud nuts evenly to 15ft. Lbs .

CAUTION: If stud nuts are not tightened to

proper torque, valve spools may bind or stick,

or cause O-ring seals to extrude.

9. Reinstall handle assembly. Use locite 242 (blue) on all

screws.

REPLACING SECTION SEALS
1. Disassemble valve as described in previous section.
2. Remove old O-ring section seals. Be careful not to

scratch or otherwise damage sealing surface areas.

3. Thoroughly clean O-ring counter bores and surfaces of

each valve section.

4. Place valve assembly on a flat surface for reassembly.
5. Replace four O-ring seals. Seal Kit contains the

number of section seals required for one work

section/inlet cover.

6. Replace work sections on assembly studs in reverse

order in which they were removed. O-ring counter

bores (with O-rings in place) should be to your right

(downstream side of section) with inlet cover on your

left.

NOTE: Use care when sliding work sections on tie rods

to avoid dislodging O-rings.
7. When all work sections and outlet cover are positioned

on the assembly studs, replace lock washers and nuts.

8. Support alve on valve mounting brackets (Item 24,

p.22). Tap all sections downward with rubber mallot to

align sections evenly against rods.

8. Torque stud nuts evenly 15ft. Lbs.

SPOOL SEAL REMOVAL

1. Remove handle assembly. Center two sections -

Remove clevis pin from spool.

2. Remove bonnet and spool positioner assembly from

rear of the work section.

3. Carefully slide spool out of valve housing.
4. Remove old spool seals. Be careful not to scratch or

damage spool bore and sealing surfaces.

5. Thoroughly clean both seal grooves and exposed end

of spool.

SPOOL SEAL INSTALLATION

1. Lightly oil and insert one new spool seal in handle end

(front) seal groove of valve housing. Verify seal fit by

carefully running your finger around exposed edge of

seal. Seal should have a perfect ridge with no kinks or

twists.

2. Lightly oil valve spool and, starting from positioner end

(rear), reintroduce spool into valve housing.

3. Slowly push spool past seal with a twisting motion.

Stop when seal groove is exposed on positioner end.

CAUTION: Do not pull spool too far, as this

will allow seal in front groove to enter a spool

groove. Seal may be cut when spool is

pushed back.

4. Lightly oil and insert remaining spool seal in bonnet

end seal groove. Verify seal fit by carefully running your

finger around exposed edge of seal. Seal should have

a perfect ridge with no kinks or twists.

5. Return spool to center position with a twisting motion.
6. Reattach spool positioner. Use loctite 242 (blue) thread

locking compound on spool screw holding positioner

parts to spool. Be careful not to over torque this screw

and twist it off. Use 7ft. lb. maximum torque. Slide

bonnet in place. Replace bonnet screws. Torque

bonnet screws to 5-7 ft. Lbs.

7. Replace spool clevis pin and handle assembly.
REPLACING DAMAGED BACKUP RINGS
Backup rings are installed at the factory using a special

sizing tool.
Do not replace backup rings offered in seal kits unless

original ring has been damaged.

1. If backup ring must be replaced, cut replacement

backup ring as shown.

CAUTION: Make only one diagonal cut in

backup ring. Do not cut backup ring into two

pieces.

2. Slip backup ring over cartridge and into place.

MAINTENANCE

MAINTENANCE

F3788-7-04

Maintenance Section 5-7

© 2004

Alamo Group Inc.

Содержание 95HD

Страница 1: ...e and must be maintained with the unit at all times and the Safety and Operation Instructions contained in this manual before operating the equipment READ UNDERSTAND FOLLOW nnnnnnnnn mmmmmnnnnnn This...

Страница 2: ...of the Machine is recorded on the Warranty Card and on the Warranty Form that you retain The use of will fit parts will void your warranty and can cause catastrophic failure with possible injury or d...

Страница 3: ...4 1 Pre Operation Check List Operating Directions Engine Speed 4 2 Controls Boom Swing Dipperstick Bucket 4 2 Operating Backhoe 4 3 Seat Adjustment Mounting and Dismounting Buckets 4 4 Placing the Sta...

Страница 4: ...Safety Section 1 1 SAFETY SECTION 2004 Alamo Group Inc...

Страница 5: ...backhoe Never allow a person to work under a raised bucket Never lift a person with backhoe Do not use bucket as a battering ram Always lower bucket to ground when not digging Never leave tractor una...

Страница 6: ...n transporting the Equipment use the Power Unit flashing warning lights and follow all local traffic regulations Operate this Equipment only with a Tractor equipped with an approved roll over protecti...

Страница 7: ...rt personnel should wear hard hats safety shoes safety glasses and proper hearing protection at all times for protection from injury including injury from items thrown by the equipment PROLONGED EXPOS...

Страница 8: ...ent at a slow speed in turns Increase the speed through the turn only after you determine that it is safe to operate at a higher speed Use extreme care and reduce your speed when turning sharply to pr...

Страница 9: ...ately before or while operating the Power Unit and Implement Drugs and alcohol will affect an operator s alertness and coordination and therefore affect the operator s ability to operate the equipment...

Страница 10: ...e of the equipment and result in injury Always shut the Power Unit completely down place the transmission in park and set the parking brake before you or anyone else attempts to connect or disconnect...

Страница 11: ...F3788 7 04 Safety Section 1 8 SAFETY SAFETY 2004 Alamo Group Inc...

Страница 12: ...6 44897 2 DANGER Crushing Hazard 7 44898 1 OPERATION Boom Operation 8 44899 1 OPERATION Dipperstick Bucket Operation 9 44900 1 OPERATION Left Side Stabilizer Position 10 44901 1 OPERATION Right Side...

Страница 13: ...egible Replacement decals are available from your dealer 5 44896 2 45970 4 44895 6 44897 3 44907 14 48280 SAFETY 45491 Do not attach backhoe to tractors which have 3 PT Quick Attaching Coupler Backhoe...

Страница 14: ...F3788 7 04 Safety Section 1 11 SAFETY 10 44901 9 44900 12 44909 11 44908 1 50850 16 35674 5 13 50851 15 49696 7 44898 8 44899 SAFETY 49696 2004 Alamo Group Inc...

Страница 15: ...l equipment with which the employee is or will be involved Employer Responsibilities To ensure employee safety during Tractor and Implement operation it is the employer s responsibility to 1 Train the...

Страница 16: ...INTRODUCTION SECTION Introduction Section 2 1 2004 Alamo Group Inc...

Страница 17: ...safety alert symbol identifies important safety messages in this manual Observe and follow all safety messages to prevent personal injury Reference to left hand and right hand used in this manual ref...

Страница 18: ...Spread down position 117 K Stabilizer Spread up position 67 Shipping Weight less bucket 1818 lbs Bucket Digging Force 5872 lbs Dipperstick Digging Force 3800 lbs Operating Pressure 2500 PSI NOTE See I...

Страница 19: ...F3788 7 04 Introduction Section 2 4 SPECIFICATIONS INTRODUCTION INTRODUCT ION 2004 Alamo Group Inc...

Страница 20: ...Assembly Section 3 1 ASSEMBLY SECTION 2004 Alamo Group Inc...

Страница 21: ...2 1 2 nipple 19 3 4 x 3 4 elbow 18 and 3 4 x 2 nipple 20 to right tank port Point 3 4 x 3 4 elbow fitting 18 up 4 Install filter body without filter element to 3 4 nipple 20 Be sure oil flow arrow on...

Страница 22: ...connecting backhoe hydraulics to tractor so stabilizers can be activated Position backhoe to achieve 90 and 15 18 inch height as described in figures 3A 3B 5 Join support braces 1 2 front center link...

Страница 23: ...h pin from tractor If required insert bushing 8 9 or 22 into center front link 5 to match tractor clevis pin diameter CAUTION Upper connecting point where backhoe fastens to tractor is under high load...

Страница 24: ...Operation Section 4 1 OPERATION SECTION 2004 Alamo Group Inc...

Страница 25: ...d at which backhoe operates is dependent on tractor PTO RPM Use a moderate engine speed to start and increase it as your experience permits CONTROLS The backhoe has two major control levers Boom Swing...

Страница 26: ...g bucket toward operator with down pressure on it As dipperstick approaches operator the dipperstick and bucket controls can be operated together to close bucket and trap material At end of stroke lif...

Страница 27: ...des for the widest stabilizer stance and lowest center of gravity Raising the wheels off the ground will not only reduce stability and digging depth but impair performance and impose unnecessary stres...

Страница 28: ...bracket located on bucket cylinder when transporting backhoe During backhoe operation position SMV sign on bracket located on tractor REMOVAL FROM TRACTOR STORAGE Backhoe is self assisting during ins...

Страница 29: ...MAINTENANCE SECTION Maintenance Section 5 1 2004 Alamo Group Inc...

Страница 30: ...for wear or damage and replace if necessary CYLINDER ASSEMBLY NOTE Be careful not to damage seals and o rings on edges or holes in cylinder tube Inspect and remove burrs and sharp edges if necessary b...

Страница 31: ...slowly for a short time before placing unit under full load Fully cycle backhoe through all movements several times to purge air from the system HYDRAULIC HOSES WARNING Escaping hydraulic fluid under...

Страница 32: ...ittings thoroughly before using grease gun Lubricate all 27 grease fittings at least twice daily See chart for locations once at the beginning of operation and again approximately half way through the...

Страница 33: ...n center position 18 19 21 25 POSSIBLE CAUSE CORRECTIVE ACTION 1 Low oil level in reservoir Fill reservoir to proper level 2 No oil supply to machine Coupler not fully engaged 3 Air in system Purge al...

Страница 34: ...cylinder ports are plugged Check restrictors for debris and clean See Fig 11 item 3 31 Hoses plumbed incor rectly Check hose plumbing See Fig 11 32 Excessive hydraulic pressure due to tractor mechani...

Страница 35: ...th rubber mallot to align sections evenly against rods 8 Torque stud nuts evenly 15ft Lbs SPOOL SEAL REMOVAL 1 Remove handle assembly Center two sections Remove clevis pin from spool 2 Remove bonnet a...

Страница 36: ...RINGS EXHAUST O RING LOAD CHECK EXHAUST O RING 6B ROD END DIPPERSTICK CYLINDER 6A BASE END DIPPERSTICK CYLINDER 5B ROD END BUCKET CYLINDER 5A BASE END BUCKET CYLINDER 4B BASE END RIGHT STABILIZER CYL...

Страница 37: ...MAINTENANCE MAINTENANCE F3788 7 04 Maintenance Section 5 9 2004 Alamo Group Inc...

Страница 38: ...2 1066 1181 1444 1224 1496 1658 2027 5 8 11 126 139 171 188 168 185 228 251 NOTE These values apply to fasteners as received from the supplier dry or when lubricated with normal engine oil They do not...

Страница 39: ...able amount as determined by Manufacturer and for returning the goods to the Dealer whether or not the claim is approved Purchaser is responsible for the transportation cost for the goods or part s fr...

Страница 40: ...o abuse or mis use and have been properly maintained as noted NOTE properly maintained specifically includes but is not limited to A Regular lubrication B Using proper amounts of correct hydraulic flu...

Страница 41: ...nfine the employee to the protected area provided by the ROPS REQUIRED OF THE OPERATOR 1 Securely fasten seatbelt if the tractor has a ROPS 2 Where possible avoid operating the tractor near ditches em...

Страница 42: ...95HD SOM 7 04 Printed U S A P N F 3788...

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