KADANT PTX 9750 Setup guide

Repair Instructions for the 9750 PTX® Rotary Joint
fluidhandling.kadant.com/en/knowledge-center/installation-and-repair-instructions/piston-type-pt-ptx-pt2x-rotary-joints/repair-instructions-
for-the-9750-ptx-rotary-joint
Effective:December 1, 2021
Introduction
Read all of the instructions before proceeding.
Refer to Kadant Johnson assembly drawing for part identification and to drawing A37640 for torque specifications.
For easy identification, parts used in individual steps are often accompanied with their position in the assembly
drawing [e.g. gasket (8B)]. Tighten all fasteners in a star pattern. Certified drawings are available upon request.
Dimensions are for reference only and subject to change.
Safety
This safety symbol alerts you to risk of death or injury if the instructions are not followed. In all steps, death or injury may result if the machine is not de-
energized, depressurized, cooled, and stopped. Death or injury may occur if the product is operated with a fluid type or at a pressure, temperature, or speed
that do not meet its specifications. Death or injury may occur if heavy parts and pinch hazards are not handled properly. Follow your company’s safety
procedures.
Tools
Step 1 - Removal
Disconnect piping. Remove the head and set aside.
Equipment must be cool and free of pressure.
Step 2
Bend tabs back from hollow bolt.
Tools Per Crew
(2) 9/16" Combination Wrenches
(2) 3/4" Combination Wrenches
13/16" Combination Wrench
13/16" Shallow Socket
15/16" Combination Wrench
15/16" Shallow Socket
1/4" Hex Head Socket
5/16" Hex Head Socket
3/8" Hex Head Socket
1/2" Hex Head Socket
(2) 6 1/2" Drive Extension
0 to 150 lbs Torque Wrench
1/2 to 3/8" Square Drive Reducer
3 lbs Hammer
Gasket Scraper
Endcap Assembly Repair
6 mm Hex Head Socket with extension
5 mm Hex Head Socket
O-ring Pick
To Pass Between Crews
300 lbs Torque Wrench
2 1/2" Socket and Adapters for Torque Wrench
Step 3
Unthread the hollow bolt approximately 1/4" (6.4 mm). Place a block of wood over the hollow bolt and strike it with
a hammer. This will break the tapered seal inside of the rotary joint. Remove the hollow bolt and set aside for reuse.
Step 4
Remove the body and set aside with O-ring side up. Remove and discard the O-ring (26).
Step 5
Remove the end cap assembly and seal ring. Place the end cap assembly with the seal ring surface facing up. If
working on the dryer bearing, move the support tube into the journal.
Spring force present during end cap assembly installation.
Step 6
Remove the ring bracket and wear plate.
Tip: If dryer bearing work is needed, remove the journal flange (if necessary) and bearing cover to access the
bearing. Reinstall after bearing work is complete.
Note: There are two types of repair kits. If using the preassembled end cap assembly kit, proceed to step 12.
Step 7 - End Cap Asembly Repair
Place the assembly in a press with the seal ring surface facing up. Compress the nipple and remove the cap screws.
Release the press and separate the nipple from the end cap.
Step 8
Remove the O-rings and discard. Inspect the nipple groove(s) and sealing surfaces. Replace if damaged. Install and
lubricate new O-rings.

Step 9
Inspect and clean the end cap, torque tubes, cap screws, and springs. Replace if damaged.
Step 10
Reinstall the nipple by placing over the springs and passing the torque tubes through the springs. Use a press to
compress the nipple into the end cap. Lubricate the shoulder cap screws with Loctite and install. Release the
press.
Step 11
Clean and inspect the head, body, and wear plate. Replace if damaged.
Step 12 - Installation
Using a new gasket, reinstall the wear plate (8A) with cap screws (16A).
Tip: Pull the support tube out of the journal if it was pushed in during the previous step.
Step 13
Install the ring bracket with cap screws (20C).
Step 14
Clean the mating surfaces of the wear plate, new seal ring (6), and nipple. Attach the seal ring and end cap
assembly with four cap screws (3C).
Important: After fastening the end cap assembly, confirm the "X" dimnestion is correct. Refer to the Kadant
Johnson drawing.
Step 15
If there is an O-ring present on the support tube, remove it. Lubricate and install a new O-ring with silicone
lubricant. Apply anti-seize to the tapered portion of the tube.
Step 16
Install a new O-ring (26) into the body. Position the body over the support tube. Align the pin(s) with the support
tube indexing slots. Position both over the studs on the ring bracket and secure with hex nuts (20B).
Step 17
Apply anti-seize to the threads of the support tube nut. Insert two bent lock washer tabs into the body and install
support tube nut, torque to 300 ft-lbs (407 Nm). Bend two lock washer tabs over the bolt flats to prevent bolt
loosening.
Step 18
Place gasket (8) on head and install head on body with cap screws (2A). Connect piping.
R-9750PTX-1
The Kadant Johnson Warranty
Kadant Johnson products are built to a high standard of quality. Performance is what you desire: that is what we provide. Kadant Johnson products are warranted against defects in materials and
workmanship for a period of one year after the date of shipment. It is expressly understood and agreed that the limit of Kadant Johnson’s liability shall, at Kadant Johnson’s sole option, be the repair or
resupply of a like quantity of non-defective product.
Kadant Johnson rotary joints and accessories are could be subject toEuropean Pressure Equipment Directive 2014/68/EU(PED). Modifications or changes to the rotary jointsand/or accessoriesare only
permitted upon approval of Kadant Johnson. Only genuineKadantparts and original accessories will ensure the safety ofthese assemblies. The use of other than original parts voids the warranty and will
lead to forfeiture of the declaration of conformity and will invalidate any liability for damages cause thereby.