Alfa Laval GJ 18, Инструкция по эксплуатации, Страница: 25 / 44

6 Maintenance
25
Read the instructions carefully. The items refer to the parts list and service kits section.
Drawings 8-12
Input Shaft Housing Assembly
Drawing 12: Confirm that the Input Pinion Shaft Assembly is assembled, with no play between the parts.
Drawing 11: Gently press the two Input Shaft Seals (pos. 11) into the top of the Input Shaft Seal Housing (pos. 9.1), applying
pressure evenly around the seals during installation to prevent damage.
Note: The Input Shaft Seals (pos. 11) are installed back-to-back, with the lips/springs facing away from
each other.
Install the Input Shaft Seal Snap Ring (pos. 10) into the groove in the top of the Housing to retain the Seals.
The Gear Box O-Ring (pos. 12) should be seated in its groove on the outer diameter of the Housing.
Drawings 9-10: Confirm that the Central Bearings (pos. 7.2, pos. 8.2) are pressed into the Rotor (pos. 7.1) and Input Shaft
Bearing Housing (pos. 8.1), respectively. Verify also that the Gear Box Pin (pos. 8.3) is pressed into the bottom of the Bearing
Housing.
Drawing 8: Thread the Input Shaft Seal Housing Assembly (Drawing 11) into the Input Shaft Bearing Housing Assembly
(Drawing 10).
Note: The Input Shaft Housings (Drawings 10 and 11) have left-hand threads.
Slide the threaded-together Housing Assemblies onto the Input Pinion Shaft Assembly (Drawing 12), with the Seal Housing
Assembly (Drawing 11) facing towards the Input Pinion (pos. 6.3).
Slide the Rotor Assembly (Drawing 9) onto the Rotor Shaft (pos. 6.1) next, making sure the Central Bearing (pos. 7.2) in the
Rotor (pos. 7.1) is facing down towards the Housings.
Place the Lock Washer (pos. 5) onto the Input Shaft on top of the Rotor, then thread on the Rotor Nut (pos. 4). Tighten the Nut
using a 7/16” socket wrench.
Caution: Gently hold the Input Pinion (pos. 6.3) while tightening the Rotor Nut (pos. 4), but DO NOT clamp
down. Doing so may damage the gear teeth.
Drawing 13
Output Shaft Housing Assembly
Ensure that the Output Shaft Upper Bearing (pos. 18) is pressed into the Output Shaft Bearing Housing (pos. 17.1). Its upper
face should be flush with the ledge inside the Housing.
Gently press the two Output Shaft Seals (pos. 19) into the bottom of the Housing, applying pressure evenly around the seals
during installation to prevent damage.
Note: The Output Shaft Seals (pos. 19) are installed back-to-back, with the lips/springs facing away from
each other.
Install the Output Shaft Seal Snap Ring (pos. 20) into the groove in the bottom of the Housing to retain the Seals.
Confirm that the Gearbox Pin (pos. 17.2) is firmly installed in its hole in the Housing.
The Gear Box O-Ring (pos. 12) should be seated in its groove on the outer diameter of the Housing.
Holding the Housing with the Gear Box Pin facing up, insert the end of the Transition Output Shaft (pos. 21) with the flats
through the Housing.
Note: There should be some resistance from the Bearing (pos. 18) and the Seals (pos. 19) when installing
and rotating the Output Shaft (pos. 21). If the Output Shaft rotates freely and spins without direct
force applied, the Seals and Bearing should be replaced.