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13 

Installation guide 

 

Check valve 

replacement

 

 

The following is the general procedure to change the check valve. These instructions show a 2 sections telescopic 
jack but the procedure is the same no matter the number of sections. 

 

 

 

1. 

Lift the car up to have enough space to remove the entire section of the jack. 

 

2. 

When the car is held securely, close the main switches. 

 

3. 

Unscrew the bolt that holds the piston to the car. 

 

4. 

Open the manual valve until the piston is fully retracted. There should not be any pressure left 
in the jack. 

 

5. 

Close  the  ball  valve  on  the  line  leading  to  the  jack  to  prevent  any  oil  to  come  from  the 
reservoir. 

 

6. 

Install a chain block under the car, as centered as possible, and tie the chain around the head 
of the section where the replacement should be. 

 

7.   

Remove  the  bleeder  on  the  head just  below  and  screw  the 1/8”  NPT  fitting  connected to a 

hose.  While  lifting  the  upper  sections,  oil  will  be  ejected  through  this  hose.  You  can  recuperate  it  in  a 
clean recipient. 

 

8. 

Lift  the  previously  tied  section  until  the  stopper  ring  reaches  the  head  with  the  hose.  Then,  lower  the 
sections  of  about  one  inch  and  unscrew  this  head.  Once  the  head  has  been  unscrewed,  lift  the  sections 
until you have enough room to remove the check valve. 

 

9. 

Remove the check valve by using a 15/16” or 3/4” socket. Some oil will come out this way; recuperate it 
in a clean recipient. 
 

 
 
 
 
 

Содержание HOLELESS

Страница 1: ...TELESCOPIC HOLELESS INSTALLATION GUIDE...

Страница 2: ...2 SOLUTIONS in motions Holeless telescopic jack Product presentation...

Страница 3: ...sentation 2 Technical drawing Head 4 Technical drawing Bottom 5 Product characteristics 6 Holeless telescopic jack installation 7 Air bleeding 9 Followers guides 10 Twin jacks 11 Maintenance program 1...

Страница 4: ...e 3 Seal 1st section Urethane 4 Bleeder 1st section 5 Wiper 2nd section Urethane 6 90 coupling 2nd section 7 Bleeder 2nd section 8 Head 1st section Cast iron Components Materials 9 Tube or shaft 1st s...

Страница 5: ...Bottom Components Materials 1 Piston Cast iron 2 2nd or last section Steel 3 Check valve Steel 4 Spirolock Steel 5 Base Steel Components Materials 6 Wear ring Plastic 7 Casing Steel 8 Seal Urethane 9...

Страница 6: ...with the CSA B44 13 and ASTM A17 1 2013 standards Our welding procedures are certified according to the CSA W47 1 standard by the Canadian Welding Bureau CWB Scope Dumb waiter lifts Lift for disabled...

Страница 7: ...tion the jack on the pit support plate plumb the jack with a level and fix a clamp on the wall of the jack close to the head 3 Set the plumb line off the rails in the hoist way through the centerline...

Страница 8: ...s the inlet line 9 It will be necessary to bleed air from each stage through the air bleeder valve located on each head It is important that the actual site conditions are as specified on the layout d...

Страница 9: ...air coming out of the bleeder Close the bleeder to prevent unnecessary oil loss 7 Repeat these two steps for each section beginning with the top one and finishing with the lowest 8 Run the cylinder ab...

Страница 10: ...the cylinder using the information shown previously 2 Install a follower guide on the head of the second biggest section of the jack 3 Repeat the same step for all sections with a smaller diameter 4 I...

Страница 11: ...to identical sections Otherwise the difference of friction or restriction between the sections could cause an unbalance of the loads between the cylinders If for some reason it is impossible to have i...

Страница 12: ...oil remains in the reservoir 6 Open the bleeder on each head 7 Disconnect the oil recuperator 8 To facilitate the installation of the heads mark with a pencil initial position of the head with a line...

Страница 13: ...k to prevent any oil to come from the reservoir 6 Install a chain block under the car as centered as possible and tie the chain around the head of the section where the replacement should be 7 Remove...

Страница 14: ...to screw it very tight at this moment 13 Just before the jack reaches a completely retracted position unscrew the same head again to fill the jack with the recuperated oil Then screw the head firmly...

Страница 15: ...cover claims for damages direct or indirect for loss of time or caused by a Product modification Product tampering or Product adjustment made by or for the Buyer and not previously approved by ITI HY...

Страница 16: ...for transporting the return of the Product to the specified ITI HYDRAULIK factory A Product found to be defective after inspection by ITI HYDRAULIK may in our sole discretion be repaired or replaced...

Страница 17: ...7 Installation guide 17 PRIORITY CLIENT 3611 ROUTE 346 SAINTE JULIENNE QU BEC J0K 2T0 TELEPHONE 450 831 3229 FAX 450 831 2219 TOLL FREE 1 800 953 3229 E MAIL INFO ITIHYDRAULIK COM WWW ITIHYDRAULIK COM...

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