Power Jacks Neeter Drive Range-N - Manual (Page 8)

8
SPIRAL BEVEL GEARBOXES RANGE “N”
5.3
Motor mounting flange units.
Motor mounting flange units share common components with the units detailed in 5.2, however the
motor flange and input pinion are different and vary on every unit dependant upon ratio and flange
size / style. For a parts list of items in a motor-flanged unit please contact Neeter Drive with the
unit model number and serial number.
6. Disassembly / Assembly Instructions
6.1
Ratio 1:1 and 1.5:1
6.1.1 Remove oil fill / drain plugs (15) and drain oil from unit
6.1.2 Remove external shaft keys (3) and ensure no sharp edges remain around keyways
6.1.3 Remove set screws (11) from input shaft end cap (4)
6.1.4 Slide off end cap (4), taking care not to damage oil seal (5)– it is recommend that all oil seals (5) and
“O”-rings (6) are replaced.
6.1.5 Remove gaskets (18) and retain for reassembly
6.1.6 Lift out input gear (1) sub assembly
6.1.7 To disassemble input gear (1) sub assembly remove circlip (16) if fitted, and remove bearings (7).
The gear (13) is pressed onto the shaft and will need to be pressed off, care must be taken not to
damage shaft. On some units the 1.5:1 ratio input gear (13) and shaft (1) are integral – this can be
seen upon removal of the bearings.
6.1.8 Remove end caps (4) from each side of the output shaft (2) as detailed in 6.1.4 above
6.1.9 Remove gaskets (18), noting the amount and colours and retain for reassembly
6.1.10 Note which end the gear (12) sits inside the case (9), as this will affect the shaft rotation.
6.1.11 Remove bearing (7) from the end opposite to the one where the gear (12) is fitted.
6.1.12 Slide out output gear (12) sub assembly
6.1.13 To disassemble output gear (12) sub assembly remove bearing (7) behind gear (12). The gear (12)
is pressed onto the shaft (2) and will need to be pressed off, care must be taken not to damage
shaft.
6.1.14 If needed – remove inner bearing cup (8) and steel shims, retain shims for later use.
6.1.15 Clean and check all parts for damage or excessive wear and replace where necessary, paying
special attention to seals (5) and “O” rings (6).