5 Maintenance
21
Read the instructions carefully. The items refer to the parts list and service kits section.
5.5 Reassembly
General Notes
All parts must be cleaned thoroughly before reassembling.
Any deposits remaining on the parts can cause difficult
disassembly the next time the Alfa Laval Gamajet needs servicing. Also, it may cause misalignment of parts and the potential
for premature failure.
Unless otherwise stated, apply a dab of a
Teflon-based anti-seize compound
to
all threads when reassembling; this will
prevent galling of threads and ease any future disassembly.
To ease installation of all O-rings, they should be lubricated prior to reassembly. Lithium-based soap grease is acceptable, for
Viton
O-rings; however, a Silicon based lubricant must be used for EP O-rings. Do not lubricate the Clutch O-ring (33).
Drawings 4, 6
Gear Train
With the empty Planetary Ring Gear (18), replace the Top Planetary Large Washer (45) and the Internal Retaining Ring (41)
into the top of the (18). The top is the end with the 4 holes drilled in the sides.
With all the internal components assembled as in (drawing 4), slide the assembly into the (18) from the bottom up. The
assembly may need to be jiggled or twisted slightly in order to get the gear teeth to line up.
Note:
Ensure that every Planet Gear (30) has a Planet Gear Washer (40) under it on each post.
Replace the Planetary Output Shaft Washer (44) and the (41) on the bottom of the gearhead. This completes the cartridge
gearhead assembly.
Place the Output Shaft (13) through the Input Shaft Lower Bearing Housing (21; drawing 2) and press the bottom of the
geartrain assembly firmly onto the bottom of the gearhead. Be sure to align the pin on the (21) with the slot on the outside of
the (18).
Insert the Input Shaft (39; drawing 3) through the Input Shaft Upper Bearing Housing (20; drawing 1). Put the Rotor (48;
drawing 5) over the end of the shaft with the Carbides of the (48) and the (20) facing each other.
Fasten the Rotor Lock Washer (4) and the Rotor Nut (5) onto the top of the (39) and tighten with a
5/16”socket wrench. The
(48) can be held with smooth jaw pliers to keep it from rotating. Do not grip the Input Pinion (38) while tightening the (5)
because this will cause damage to the gear.
Press the top of the geartrain assembly firmly onto the top of the gearhead ensuring that the (38) aligns with the top layer of
planet gears and the Gearbox Pin (2) on the (20) is aligned with the slot on the outside of the Planetary Ring Gear (18).
Drawing 11
Body Assembly
Slide the Tee Housing Bevel Gear (15; drawing 10) over the end of the Stem (7; drawing 7). Align the hole in the (15) with the
Dowel Pin (1).
Place the first Tee Housing Bearing (23) onto the (7).
Push the Tee Housing (8; drawing 8) over it until it is fully seated.
Install the second (23) onto the (7).
Tip:
Now, place the second Tee Housing Bearing (23) into the Stem Base (22; drawing 9), aligning its hole with the Bearing
Locating Pin (37). Now, invert the (8)/(7) assembly and place it over the (23)/(22) assembly. This technique ensures correct
alignment of the (23) and (37). Apply pressure to (22) to drive it and the (23) into the (8).
Align the through holes of the (22) with the threaded holes in the top of the (7). Using a
5/32” Hex Key, thread the Stem
Screws (32) and Stem Lockwashers (53) into the (7). Tighten in a star pattern.
Thread the Tee Housing Cap (14) to the end of the (8).
Note:
This is a
Left-Hand
thread.
Drawing 12
Geartrain Installation
Insert the Geartrain (drawing 6) from into the Body Assembly (drawing 11). Rotate the Tee Housing (8) until the Output Shaft
(13) falls into the slot of the Tee Housing Cap (14). Continue rotating the (8) until the Tapered Pins (35) are between the tabs
of the Input Shaft Upper Bearing Housing (20; drawing 1) and the Geartrain (drawing 6) is able to be seated fully down.
Thread the Cap (6) into the Body Assembly (drawing 11). Be sure to use the flats provided on the (6). Tighten.
Warning: Hold or turn on Stem (7). DO NOT hold or turn on Tee Housing (8) or Tee Housing Cap (14). Doing so will
damage the Geartrain (drawing 6).
Summary of Contents for GJ PF-FT
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