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(*) You can only use P-clamps on size -16 return pipes. You must not use P-clamps on size -16 high pressure pipes.
 2_ Install the clamps on the pipes with the related hardware.
 3_ Make the identification mark with identification tape ABS0653-05 or NSA0144-4 or with white/red paint resistant to hydraulic fluid.
 (b) Installation of Lacing tape.
 1_ Apply a layer of BONDING AND ADHESIVE COMPOUNDS (Material No. 08-004) on one pipe.
 2_ Install the lacing tape MISCELLANEOUS (Material No. 19-002) over the adhesive and the two pipes.
 3_ Finish the lacing with a knot. Tighten the knot.
 4_ Apply BONDING AND ADHESIVE COMPOUNDS (Material No. 08-004) on the knot and the ends of the lacing tape.
 5_ Make the identification mark with identification tape ABS0653-05 or NSA0144-4 or with white/red paint resistant to hydraulic fluid.

 

R  (4) Installation of spiral strip. 
R  (Ref. Fig. 205/TASK 20-23-14-991-005) 
R  NOTE : If a pipe is too close to a fixed part (distance less than 5____ 
R  mm (0.1968 in.)), you can install a spiral strip attached with 
R  a cable tie at each end on the tube to prevent damage. 
R  This method is not applicable for parts that can move. 
R  (a) Wind a spiral strip NSA849000 around the pipe. 
R  (b) Install a cable tie NSA935401 at each end of the spiral strip. 
R  (5) Installation of grommets ABS0648. 
R  (Ref. Fig. 205/TASK 20-23-14-991-005) 
R  (a) Before you install a grommet, apply COMMON GREASE (Material No. 
R  04-012) on the internal and external faces of the two parts. This 
R  makes correct installation of the grommet easier. 
R  (b) During installation, make sure that: 
R  - the pipe is centered on the grommet axis, 
R  - the nose of the inner part is correctly installed on the outer 
R  part. 
R  (c) After correct installation, the pipe can move approximately 15 
R  Deg. in each direction. 
R

 

 Installation of Spiral Strips and Grommets
 Figure 205/TASK 20-23-14-991-005
 1EFF :  ALL  1  20-23-14 Page 212 
1  1  May 01/99
 1  1
 1CES  1

 

 HYDRAULIC BOBBINS - MAINTENANCE PRACTICES
_________________________________________
 TASK 20-23-21-911-001
 Removal/Installation of the Bobbins from their Housings and Installation of O-rings, Square Seals, and Back-up Rings on the Bobbins
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE  QTY DESIGNATION
 -------------------------------------------------------------------------------
97A29102090000 1 TOOL SET - REMOVAL BOBBINS AND INSTALLATION RINGS
 B. Consumable Materials
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
R Material No. 02-003  F NSA 307110 TYPE 4 HYDRAULIC FLUID (PHOSPHATE ESTER BASE) (Ref. 20-31-00)
 Material No. 04-015  USA BAC 5001 DACO-5073
 GREASE (Ref. 20-31-00)

 C. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
20-23-21-991-001 Fig. 201
 20-23-21-991-002 Fig. 202
 20-23-21-991-003 Fig. 203

 

 3. Job Set-up
__________ Subtask 20-23-21-869-050
 A. Not Applicable
 4. Procedure
_________ Subtask 20-23-21-911-050
 A. Equipment
 (Ref. Fig. 201/TASK 20-23-21-991-001)
 TOOL SET - REMOVAL BOBBINS AND INSTALLATION RINGS (97A29102090000)

 Subtask 20-23-21-911-051
 B. Removal of Bobbins from their Housings
 (Ref. Fig. 202/TASK 20-23-21-991-002)

 (1)
 Removal of bobbins (from 1/4" dia to 1/2" dia)

 (a)
 Get the removal tool applicable to the diameter of the bobbin that you remove.

 (b)
 Make sure that the tool is correctly set:

 -34 mm (1.3385 in.) for bobbin from 1/4" dia to 3/8" dia,
　
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