7
Parker Hannifin Corporation
Helac/Cylinder Division
Enumclaw, Washington USA
www.helac.com
PowerTilt Tilting Coupler
PT-4.5 Service & Repair Manual
HY34-1370
Assembly
Assembly
5.
Insert the shaft (2) into the piston sleeve (3),
aligning the timing marks of the shaft with
the piston sleeve. Once the timing marks
are verified, rotate the shaft inward until the
pressure seal (205) contacts the housing (1).
Then tap gently to compress the seal and
rotate the shaft into the housing.
6.
Thread the end cap (4) onto the shaft (2).
Using a pry bar, tighten the end cap until the
lock pin (109) holes align. Then insert the lock
pins (109) into the holes with the dimple side
up. Using a punch, tap the lock pins to the
bottom of the hole. Insert the set screws (113)
over the lock pins and tighten to 2.8 Nm. Install
the port plugs (106).
1.
Before installation, coat the seals and
machined surfaces with a high quality
hydraulic oil.
2.
Coat the end cap (4) threads and both
sides of the thrust washers (304) with
lithium grease.
3.
Install all the seals, bearings and thrust
washers on the end cap (4), piston sleeve
(3) shaft (2) and housing (1). Refer to the
Assembly Drawing on Page 2 and PT-4.5
Exploded View on Page 3 for correct locations
and orientations.
4.
Carefully insert the piston sleeve (3) into the
housing (1) until it contacts the housing ring
gear. Rotate the piston sleeve until the timing
marks applied to the piston and housing
during the disassembly process align. Using
a plastic mallet or mandrel, tap the piston into
the housing until the gear teeth contact.
Replace all seals, bearings and
thrust washers (304) as required.
NOTICE
As the shaft is installed, be careful not
to disengage the piston sleeve and
housing gearing.
NOTICE
Torque Values for Port Plugs
Torque Values for Metric Fasteners
Plug Size
Torque Value - Hollow Hex
Head Plugs
Nm
Torque Value - Hex Head
Port Plugs
Nm
BSPP G1/8
14 +/- 1
14 +/- 1
BSPP G1/4
31 +/- 1
31 +/- 1
BSPP G3/8
65 +/- 4
65 +/- 4
Fasteners
Socket Head Bolt
(grd 12.9)
Nm
Hex Head Bolt
(grd 10.9)
Nm
Jam Nut
(grd 12.9)
Nm
M10 x 1,50
60 +/- 3
44 +/- 3
27 +/- .2
M12 x 1,75
103 +/- 5
75 +/- 4
41 +/- .3
M16 x 2,00
258 +/- 7
187 +/- 5
54 +/- .5
M20 x 2,50
502 +/- 20
365 +/- 14
61 +/- 1
M24 x 3,00
868 +/- 27
630 +/- 20
68 +/- 2
M30 x 3,50
1 723 +/- 41
1 253 +/- 34
Fastener Torque Specifications
