Alemite 7234-B Servicehandleiding - Pagina 5

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Heavy-Duty Hose Reels

IMPORTANT: Prior to performing any

maintenance procedure, the following safety

precautions must be observed. Personal

injury may occur.

WARNING

Release all pressure within the system

prior to performing any overhaul procedure.

• Disconnect the air supply line to the pump's

motor.

• Into an appropriate container, operate the

control valve to discharge remaining pressure

within the system.

• Disconnect the material connecting hose.

Never point a control valve at any portion of your

body or another person. Accidental discharge of

pressure and/or material can result in injury.

Read each step of the instructions carefully. Make

sure a proper understanding is achieved before

proceeding.

Remove and Replace

NOTE : These procedures address the most

common repair made to the reel. Refer to

Figure 2 for component identiﬁcation on the

following procedures.

For Overhaul procedures, refer to the section entitled

Overhaul .

Spring Arbor and Power Spring

Should the reel fail to retract, either the Power Spring

and/or Arbor are broken or have been installed incorrectly.

1. Close the shut-off valve to stop the supply of oil to the

reel, if applicable.

2. Operate the control valve into a collection container to

release any pressure within the system.

3. Disconnect the material hose from the reel.

• Cap each connection to prevent spillage of oil.

4. Remove the hardware that secures then reel to its

mount.

5. Position the assembly on its reel (base assembly

upward) on a suitable work surface.

Alemite Corporation

IMPORTANT: Make sure there is no tension

on Power Spring ( 41 ).

6. Rotate the Base, Guide and Roller assembly in both

directions to ensure the reel assembly is not operating

properly.

7. Remove Union Adapter ( A ) from Main Shaft ( 24 ) if

used.

• Cap the Main Shaft as required.

8. Loosen Setscrew ( 31 ) that secures the Main Shaft to

Base Assembly ( 26 ).

• Mark the Main Shaft to indicate the ﬂat to ensure the

Setscrew seats properly upon reassembly.

See Figure 2 .

9. Remove the Base Assembly [with Guide and Roller

Assembly ( 29 )] from Spring Case and Ratchet

Assembly ( 39 ).

10. Remove Snap Ring ( 25 ) that secures Main Shaft ( 24 )

to the Spring Case and Ratchet Assembly.

• Use care not to mar the surface of the Main Shaft.

Spring Case and Ratchet Assembly

11. Remove Jam Nut ( 38 ) that secures Stud ( 40 ) to the

Spring Case and Ratchet Assembly.

WARNING

Power Spring can uncoil during separation

of Spring Case and Ratchet Assembly from

Sheave Assembly. Personal injury can occur.

Alemite Corporation recommends to secure the

Power Spring with two (2) cable ties or two steel

hose clamps prior to removal.

Should the Power Spring require disposal, secure

with two (2) steel hose clamps.

IMPORTANT: Separate the Spring Case and

Ratchet Assembly from Sheave Assembly

( 19 ) with care. Check to ensure the Power

Spring remains coiled during this process

12. Remove Locknuts ( 33 ) that secure the Spring Case and

Ratchet Assembly to the Sheave Assembly.

13. Separate the Spring Case and Ratchet Assembly from

the Power Spring and Sheave Assembly.

• Use a wide blade or other suitable tool.

SER 7234-B

Revision (7-97)