Invacare Mobility Aid Articulating Elevating Legrest User Manual

Ratchet Replacement - Articulating / Elevating Legrest  
Assembly,Installation and Operating Instructions  
REMOVING EXISTING RATCHET  
SAVE THESE INSTRUCTIONS  
ASSEMBLY (FIGURE 1)  
NOTE: Check ALL parts for shipping damage. In case of  
shipping damage, DO NOT use. Contact Carrier/Dealer  
for further instruction.  
NOTE: Note location and orientation of ratchet assembly  
BEFORE removing for installation of NEW ratchet kit.  
1. Determine how the ratchet handle is secured to the  
legrest.  
SAFETY SUMMARY  
The following recommendations are made for safe  
installation and adjustment of the Ratchet Replace-  
ment Articulating / Elevating Legrest:  
2. Perform one (1) of the following:  
If the ratchet handle is secured with a Roll Pin:  
A. Useahammerandapunchtoremovetherollpin  
that secures the ratchet handle to the ratchet as-  
sembly as shown in FIGURE 1, DETAIL “A”.  
GENERAL WARNING  
DO NOT insta ll or use this kit without first re a d-  
ing a nd unde rsta nding this instruc tion she e t.  
If you a re una ble to unde rsta nd the Wa rn-  
ings, Ca utions or Instruc tions, c onta c t a  
he a lthc a re profe ssiona l, de a le r or te c hnic a l  
pe rsonne l be fore a tte mpting to insta ll this kit  
- othe rwise , injury or da ma ge ma y oc c ur.  
B. Adjust the legrest assembly until the ratchet as-  
sembly including handle can be removed from  
the upper support tube of legrest assembly.  
NOTE:Whenremovingtheratchetassemblyandhandle  
onthearticulatinglegrest, openthelegrestassemblyuntil  
you clear the drive link and link bar.  
DO NOT ste p or sta nd on footre sts; it c ould  
c a use the c ha ir to tip ove r re sulting in injury.  
NOTE: This procedure will eliminate disassembling the  
upper support tube from the legrest support tube and in  
the case of the articulating legrest the gears will not have  
to be remeshed to obtain correct travel.  
INSTALLATION WARNING  
Afte r m a king a djustm e nts a nd BEFORE use ,  
ma ke sure a ll a tta c hing ha rdwa re is se c ure ly  
tig hte ne d .  
C. Remove ratchet body and ratchet handle from  
upper support tube as shown in FIGURE 1,  
DETAIL “A”.  
The Ratchet Replacement Kit consists of the following:  
D. Discard the existing ratchet parts.  
DESCRIPTION  
QUANTITY  
If the ratchet handle is secured with a snap ring:  
Ratchet Body  
Ratchet Bar  
Ratchet Handle  
Nylon Washer  
Acorn Nut  
Cam  
Spring  
Snap Ring  
Spacer  
Domed Push Cap  
2
2
2
2
2
2
2
2
2
2
A. Removethesnapringfromtheendoftheratchet  
handle using snap ring tool.  
B. Ifequipped, removethedomedpushcapthatse-  
cures the ratchet bar to the legrest support tube.  
C. Adjust the legrest assembly until the ratchet as-  
sembly including handle can be removed from  
the upper support tube of the legrest assembly.  
D. Removeratchetbodyandratchethandlefromupper  
supporttube.  
E. Discard the existing ratchet parts.  
Have the following tools available:  
Hammer  
Punch  
Snap Ring Tool  
1
 
INSTALLING NEW RATCHET KIT  
Legrest Support  
Tube  
Domed  
Push  
Cap  
Elevating Legrests (Figure 2)  
Ratchet  
Body  
1. Install ratchet handle through support tube.  
2. Install nylon washer onto end of ratchet handle.  
Ratchet  
Bar  
Ratchet  
Handle  
3. Install spring into ratchet body. Snap the spring clips  
intothespringclipmountingholesoftheratchetbody.  
Acorn  
Nut  
4. Insertthecamintotheratchetbodyagainstthespring  
ensuring that the teeth on the cam are facing up as  
shown in DETAIL “A”, FIGURE 2.  
Nylon  
Washer  
Snap Ring  
Spring  
Spring Clips  
NOTE: The pointed end of the cam should face the rear  
ofthewheelchair.  
5. Line-up the holes in the spring with holes in the cam  
and the ratchet body.  
Cam  
NOTE: The ratchet body should be on the INSIDE of the  
legrest support tube with the spring clip mounting holes  
facingtowardthefrontofthewheelchair.  
DETAIL “A” - CAM POSITION  
Spacer Ratchet Bar  
6. While holding the cam in place, install the ratchet  
handle through the ratchet body, spring, cam, spring  
andratchetbodyasshowninDETAILB”, FIGURE2.  
Cam  
Acorn Nut  
7. Using snap ring tool, install snap ring into groove on  
end of ratchet handle to secure ratchet.  
Spring Clip  
Mtg. Holes  
NOTE: Pointed end of cam  
faces acorn nut on ratchet bar.  
8. Install the short end of the ratchet bar into hole on  
elevatingsupporttube.  
DETAIL “B” - CROSS SECTION  
9. Perform one (1) of the following:  
A. For ADULT WHEELCHAIR with Elevating  
Legrests, install NO spacers on the ratchet bar.  
Ratchet  
Handle  
B. ForHEMIWHEELCHAIRwithElevatingLegrests,  
install one (1) spacer on the ratchet bar.  
Ratchet Body  
Spring  
10. Open legrest as far as possible.  
Domed  
Push Cap  
11. Pulldownonratchethandleandinsertratchetbarinto  
the ratchet body.  
Snap Ring  
Cam  
Nylon  
Washer  
12. Work the ratchet bar into the ratchet body while clos-  
ing the legrest at the same time.  
13. Secure ratchet bar with the acorn nut.  
FIGURE 2 - INSTALLING NEW RATCHET KIT -  
ELEVATING LEGRESTS  
14. Secure ratchet assembly by installing domed push  
cap on short end of ratchet bar.  
3
 
17. Close legrest as far as possible.  
Articulating Legrests (Figure 3)  
18. Reinstall upper legrest support to lower legrest sup-  
port ensuring that the gears mesh.  
1. Install ratchet handle from outside of legrest through  
upper legrest support tube.  
19. Reinstall screw and locknut to secure legrest sup-  
port. Securely tighten.  
2. Install nylon washer onto end of ratchet handle.  
3. Install spring into ratchet body. Snap the spring clips  
into the spring clip mounting holes of the ratchet body  
as shown in DETAIL “A”, FIGURE 3.  
OUTSIDE  
Upper Legrest  
Support Tube  
4. Insertthecamintotheratchetbodyagainstthespring  
ensuring that the teeth on the cam are facing up as  
shown in DETAIL “A”, FIGURE 3.  
Ratchet  
Handle  
Ratchet  
Body  
5. Line-up the holes in the spring with holes in the cam  
and the ratchet body.  
Washer  
NOTE: The ratchet body should be on the INSIDE of the  
legrest support tube with the spring clip mounting holes  
facing toward the front of the wheelchair and the pointed  
end of the cam facing the rear of the wheelchair.  
Snap Ring  
Elevating  
Support Tube  
Cam  
INSIDE  
Spring  
6. While holding the cam in place, install the ratchet  
handle through the ratchet body, spring, cam, spring  
and ratchet body.  
DETAIL “A” - CAM POSITION  
Spacer Ratchet Bar  
7. Using snap ring tool, install snap ring into groove on  
end of ratchet handle to secure ratchet.  
8. Perform one (1) of the following:  
A. ForADULTWHEELCHAIRwithArticulating  
Legrests, installone(1)spacerontheratchetbar.  
Cam  
Acorn Nut  
B. ForHEMIWHEELCHAIRwithArticulatingLegrests,  
install two (2) spacers on the ratchet bar.  
Spring Clip  
Mtg. Holes  
NOTE: Pointed end of cam  
faces acorn nut on ratchet bar.  
9. Insert short end of ratchet bar into hole on elevat-  
ing support tube ensuring that the short end of the  
ratchet bar is pointing toward the OUTSIDE of the  
legrest.  
Acorn Nut  
Ratchet  
Body  
10. Open legrest as far as possible.  
11. Remove top screw and locknut from upper legrest  
support. Set aside for reassembly.  
Ratchet Bar  
12. Remove upper legrest support from elevating sup-  
port tube.  
Locknut  
Spacer  
Upper Legrest  
Support Tube  
14. Insert ratchet bar into ratchet body.  
15. Pull down on ratchet handle while working ratchet  
bar into ratchet body until the ratchet body is against  
the spacer on the ratchet bar.  
Screw  
Elevating  
Support Tube  
16. Secure ratchet bar with acorn nut.  
NOTE: When reinstalling upper legrest support, close  
legrestasfaraspossibleandensurethattheratchetbody  
is against the spacer on the ratchet bar.  
FIGURE 3 - INSTALLING NEW RATCHET KIT  
ARTICULATING LEGREST  
4
 
CORRECT ASSEMBLED POSITION  
FOR COMPLETE TRAVEL OF  
ARTICULATING LEGREST (FIGURE 4)  
1. The ADULT, after it is mounted to the chair frame,  
will be at about a 30° angle.  
2. The HEMI, after it is mounted to the chair frame,  
will be at about a 45° angle.  
NOTE: Check legrest for full travel and locking capability  
before use.  
HEMI ARTICULATING  
ADULT ARTICULATING  
One (1)  
Spacers  
Two (2)  
Spacers  
APPROX. 30°  
APPROX. 45°  
FIGURE 4 - ASSEMBLY OF THE ARTICULATING LEGREST  
5
 
NOTES  
6
 
NOTES  
7
 
Invacare Corporation  
USA  
Canada  
One InvacareWay  
Elyria, Ohio USA  
44036-2125  
5970 ChedworthWay  
Mississauga, Ontario  
L5R 3T9, Canada  
905-890-8838  
Invacare and "Yes,you can" are trademarks of Invacare  
Corporation.  
© 2000 Invacare Corporation  
800-333-6900  
Form No. 93-159 Part No. 1042798 Rev C (1) 9/00  
 

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