Novatek 195.5501 Operation And Maintenance Manual - page 8
I.
To disassemble the angle head assembly, grip casting in soft jaws, unscrew bearing housing and withdraw whole
spindle assembly unit.
J.
Remove circlip. Remove bearing by sliding into slot “E” in stripper plate, support stripper plate either side of bearing
and press out.
K. Slide off circlip. Press off gear wheel and ease out woodruff key.
L. Press out spindle by placing blocks either side of bearing housing with thread in downward position.
M. Turn bearing housing over and press out bearing with punch.
N. The throttle unit can be disassembled by removing plug, O-ring and valve spring.
O. Withdraw valve stem and O-ring and with suitable punch, tap out lever pin and remove throttle lever.
NOTE: Stripping Tool Kit (part no. 312.A529) should be ordered and available prior to disassembly of the Air Drive
Motor. These special stripping or disassembly tools along with the following instructions are supplied for
customers who wish to carry out their own repairs. These repairs should only be undertaken if trained personnel
and approved speed testing equipment are available.
CLEANING, INSPECTION AND PARTS REPLACEMENT
All parts should be collected in order of disassembly, cleaned in a suitable solvent and inspected for damage or excessive
wear. All renewal parts required should be ordered to support reassembly and return to service. It should be noted that
certain parts should be stocked, based on experience, to support a rapid repair cycle.
A. Press bearings into housings and insert spacer into rear housing with taper facing away from housing.
B. Insert threaded end or rotor into rear housing and press fully home using hole “C”.
C. Fit vanes into rotor. Place cylinder over rotor, locating pin in small hole in rear housing.
D. Locale front bearing housing over splines and use bush to push bearing and housing fully home.
E. Grip splines in soft jaws and screw on nut, left hand thread.
F. Slide assembly into motor housing so that approximately 7mm of front bearing housing can be seen protruding,
replace spacer.
G. In the event that vanes are not free to move in rotor slots, they should be replaced with a new set.
H. Reassemble throttle by fitting O-ring to valve stem. Fit valve stem, spring, O-ring and throttle plug.
I.
Fit lever together with spring if fitted and pin. Screw the throttle assembly into rear of motor housing.
J.
To assembly angle head, place bearing over hole “D” in stripper plate and press on spindle right home to shoulder.
K. With bearing housing over hole “B”, thread upward, place spindle (thread downward) and bearing over housing and
with tube press bearing on outer race fully home.
L. Fit woodruff key, gear wheel, circlip and oiler. Place bearing over hole “C” and, with threat at top, press spindle into
bearing up to the shoulder.
M. Fit circlip. Locate spindle assembly into angle head. Screw bearing housing in and tighten.
N. Press two bearings onto pinion using hole “C” in stripped plate slid pinion assembly into angle head housing and
mesh gears.
Locate front space onto pinion bearings and fit coupling onto pinion splines.
O. There should now be two sub-assemblies for the right angle drive air motor”
-
1 – The angle head assembly.
-
2 – The motor and throttle assembly with lock-ring separate.
P. Replace back flange and tighten lock screw.
ELECTRIC DIRVE MOTOR SUB/ASSEMBLY INSPECTION
In the even the electric drive unit has accumulated 800 hours +/- any increment there after (1,000, 1,500 etc.), the drive unit
should be inspected as required to maintain warranty coverage.
SECTION V
SPECIFICATION - SR/AT SHROUDED R/A TOOL (5” DIA.)
MODEL #
195.5501
195.5551
195.5701
195.5751
RPM/HP
5500/1.2
5500
DISC DIA.
5” & 7”
5” & 7”
TOOL WT, #
5.5
8.0
TOOL LENGTH (IN.)
13.0
13.0