DE'RAN GEAR, INC.
RT. 2, BOX 140
LUBBOCK, TEXAS 79415
806-746-6926
OPERATION & INSTALLATION
MANUAL
Model -- M20A
3:1 Ratio
Page 1 of 10
OPERATION AND MAINTENANCE INSTRUCTIONS
DE'RAN RIGHT ANGLE GEAR DRIVES
INSTALLATION
Gear drives for domestic shipment are shipped with lubricant installed. Air freight shipments are shipped with the initial
fill of oil in a separate container.
Inspect and clean top of discharge base and bottom of gear drive to assure removal of burrs or foreign material that
might cause misalignment.
Install gear drive on discharge base and install non-reverse clutch over head shaft. The non-reverse clutch should fit
on the head shaft and engage the drive block without springing the head shaft. Lubricate head shaft threads and
bottom of adjusting nut before raising the pump impellers.
Remove protective material from the input shaft extension and clean the shaft. Install coupling half or flange.
Hammering the flange or coupling into place may damage bearings and change gear adjustment. This is not
permissible. Interference fits are permissible if coupling can be heated for installation and fitted without hammering
to install on the input shaft. Check the run out of the aligning surfaces on both coupling halves before installing the
connecting members.
Align driver with gear drive to obtain parallel and angular alignment within coupling or drive shaft manufacturers
specification. Misalignment should be as close to zero as possible for maximum life and smoothest operation. Use
only the correct specified tools and procedures when aligning the gear drive and driver. Improper alignment will void
the warranty on the DE'RAN GEAR right angle gear drive.
Excessive noise and vibration in a new gear drive is almost always an indication of misalignment or poor installation.
All drives are test run at the factory and checked for noise and vibration. Failure to correct the installation can result
in damage to the pump and gear drive. Our warranty will not apply unless drive is properly installed. Proper installation
includes alignment of the power unit, right angle drive, and pump. Adequate foundation must be provided for engine
and pump to prevent shifting or settling of either member. Positive alignment must be maintained. Recheck alignment
at regular intervals after starting the operation of the system and correct if settling or drifting has occurred.
With engine drive systems, it is not uncommon for one or more resonate speeds to exist between zero RPM and the
operating speed of the system. Continued operation at a resonate speed will result in torsional vibrations which can
be damaging to all components in the system. Unusual rumbling or clattering noise from the gear drive at a sharply
defined speed is the most common indication of torsional vibrations. As the speed is increased or decreased, the noise
will disappear. This noise is not indicative of a defect but results when the vibratory torque exceeds the drive torque
causing the gear teeth in the gear drive to separate and clash together very rapidly. Transition through a resonate
speed range to operating speed is not normally damaging, but operation of the system close to a resonate speed
should be avoided. To avoid operation at a resonate speed it may be necessary to change the elastic characteristics
of the rotating components in the system, or change the speed of the engine with respect to the pump. This can be
accomplished by changing the gear ratio of the gear drive.
Page 2 of 10
LUBRICATION
Use only rust and oxidation inhibited (R&O) gear oils in accordance with American Gear Manufacturers Association
(AGMA) standard 250.04 dated Sept. 1981.
For general operating conditions, AGMA lubricant number and corresponding viscosity range are shown on the
permanent identification plate attached to the main case of the gear drive. Contact the factory for lubricant
recommendations for operation under extremely hot or cold ambient conditions. Gear drives operating in extremely
cold weather must be provided with an oil which will flow through the oil lines at start up. Oil flow must be immediate
otherwise the bearings and gears will not be properly lubricated. A lube oil heater may be required for consistent cold
weather starting.
For ambient conditions between 50 and 125 degrees Fahrenheit use the following:
LUBRICANTS
ISO Viscosity Grade 220
SAE Grade 50
AGMA Lubricant # 5
Viscosity range
SSU @ 100 F. 918-1122
CST @ 40 C. 198-242
Celsius 10 to 52
Ambient Temp. F. 50-125
AMOCO PERMAGEAR/AMOGEAR EP220
CASTROL ALPHA EP 220
CHEVRON NL GEAR COMPOUND 220
AMOCO IND OIL 220
CHEVRON-USA AW MACH. 220
CITGO PACEMAKER 220
CONOCO GEAR OIL 220
DIAMOND SHAMROCK INDIGO 220
EXXON-USA TERRESSTIC 220
FINA PONTONIC N 220
MOBILE OIL MOBILE GEAR 630
PENNZOIL PENNZGEAR 220
PHILLIPS MAGNUS 220
SHELL-USA OMALA 220
SUN OIL SUNVIS 999
TEXACO MEROPA 220
List of brand names is for purpose of identifying types and is not to be construed as exclusive.
OIL CHANGE INTERVAL
Change oil at least every 1000 to 1500 hours of operation. If gear drive is operated intermittently less than 1000 hours
per year in a season of two or three months, change oil at the end of that period of operation to eliminate water formed
in the gear case due to condensation. More frequent oil changes are necessary for units operating at temperatures
above 190 F. or 82 C. Oil temperatures of 200 F. or 93 C. are not dangerous, but will require changes of oil every 500
to 750 hours. To drain oil, remove plug in base flange below the inspection plate. To refill, replace drain plug and
tighten securely. Fill through plug located in the inspection plate. If drive is equipped with sight gage, fill to level
indicated. If drive is not equipped with sight gage, fill to oil level hole and replace plug.
Page 3 of 10
COOLING
Our fan cooled drives are designed to eliminate the need of cooling water in most cases. Drive sizes J20 through
G200B are not equipped with cooling coils except on special order. The operating temperature of these models should
not exceed 190 F. Propeller Pump Gear Drives Model M80P thru M52A require no water cooling.
Drives size G250A through F1000A are equipped with auxiliary cooling coils. The water cooling coils must be
hooked up to reduce excessive heat generation. Failure to properly use the water cooling system will void the
warranty. The amount of fresh water required at 70 F. will be 3 gal. per minute for G250A to 7 gal. per minute for
F1000A. Oil temperature will rise with increase of speed above 1760 RPM or in rooms with limited air circulation
causing high room temperatures.
NON-REVERSE CLUTCH - PIN TYPE
The four pins enclosed are for the non-reverse clutch. They are to be installed in the drilled holes of the clutch if
non-reverse protection is desired. They may be omitted if non-reverse protection is not needed. Pins must be clean
and free from oil so they will fall freely.
The non-reverse protection is not guaranteed. Settings of over 400 ft. (122 meters) deep will require special
procedures, and in some cases the pin and ratchet type non-reverse will not work. Consult supplier for proper
procedure for shutting down the well. The gear drive can be damaged by shock engagement caused by the pump
starting to back spin before the pins engage. Check the gear drive carefully after shock engagement of the
non-reverse for any damage to the gear drive.
NON-REVERSE CLUTCH - SPRAG TYPE
The sprag non-reverse is a positive type available on most models. The sprag clutch allows no more than 1 degree
backspin of the pump. When the sprag non-reverse is in service, the engine should be idled back, and the Power Take
Off clutch should be disengaged at a slow speed allowing the non-reverse to stop the pump.
CAUTION: Failure to install a P.T.O. (clutch) between the engine and gear drive, and failure to disengage same
on pump shut down can cause damage to the Sprag Non-Reverse as well as the pin type non-reverse.
Repeated engine roll back into the gear drive will cause damage to the non-reverse pins, the rachet plate, and
shear the clutch drive bolts. NON-REVERSE PROTECTION IS NOT GUARANTEED.
WARNING
All rotating shafts and couplings must be adequately guarded before operating the gear drive. The top cover
supplied with the gear drive must be installed over the non reverse coupling and the top of the headshaft
before operating the gear drive.
An adequate guard (supplied by others) must be installed around the drive line or coupling between the gear
drive and the engine before operating the gear drive.
All gear drives are furnished with lifting devices which are adequate for safely lifting the gear drive.
1. Disconnect the drive line or coupling from the horizontal shaft of the gear drive.
2. Remove the pump headshaft nut.
3. Remove the non reverse clutch from the headshaft.
4. Disconnect the gear drive from the pump discharge base.
5. Lift the gear drive using the lifting device provided with the gear drive.
Caution: Lifting devices provided are not designed to lift the gear drive and pump together.
LONG TERM STORAGE - PRIOR TO INSTALLATION
Page 4 of 10
If possible the drives should be stored inside out of the weather. All exposed machined surfaces, such as the input
shaft, clutch coupling and bottom of drives should be coated with a rust-preventative, such as Tectyl No. 502-C.
In order to protect the internal parts such as gears, shafting and bearings the unit must be run at 300 to 500 RPM for
approximately 10 minutes every 30 days. If the unit is exposed to the weather for an extended time it must be covered
to exclude dirt, dust, moisture, and foreign materials. At a minimum, a heavy water proof bag should be slipped over
the unit.
If the gear unit cannot be rotated under power, rotation of the input shaft by hand is suggested. Rotate the input shaft
eight to twelve complete revolutions by hand every 30 days, and cover the unit with a vapor barrier.
The above are recommendations and do not imply any responsibility on the part of DERAN GEAR, INC.
WARRANTY
THE DE'RAN RIGHT ANGLE GEAR DRIVE IS GUARANTEED AGAINST DEFECTS IN WORKMANSHIP AND
MATERIAL FOR A PERIOD OF 24 MONTHS AFTER INSTALLATION WHEN OPERATED UNDER NORMAL
SERVICE AT RATED CAPACITY. WITHIN THE ABOVE STATED PERIOD THE MANUFACTURER WILL REPLACE
DEFECTIVE PARTS , RETURNED TRANSPORTATION PREPAID. THE GUARANTEE WILL NOT APPLY TO
REPAIRS MADE OUTSIDE THE FACTORY WITHOUT THE CONSENT OF THE MANUFACTURER, OR TO DRIVES
WHICH HAVE BEEN SUBJECT TO ABUSE, ACCIDENT, NEGLECT, TORSIONAL VIBRATION, OR IMPROPER
INSTALLATION. WE MAKE NO WARRANTY OF ANY KIND WHATEVER, EXPRESSED OR IMPLIED, IN REGARD
TO BEARINGS, TRADE ACCESSORIES, MACHINERY, OR OTHER ARTICLES OF MERCHANDISE NOT
MANUFACTURED BY US. NO RESPONSIBILITY WILL BE ASSUMED FOR OVERLOADING THE RATED
CAPACITY OF THE THRUST BEARING. (THE THRUST CAPACITY OF THE DRIVES SHOULD BE VERIFIED BY
THE PUMP MANUFACTURER WITH WHOSE EQUIPMENT THE DRIVE IS USED.) THIS WARRANTY IS
EXPRESSLY MADE IN LIEU OF ANY WARRANTIES OTHERWISE IMPLIED BY LAW.
DE'RAN GEAR, INC.
RT. 2, BOX 140
LUBBOCK, TEXAS 79415
PHONE 806-746-6926 -- FAX 806-745-6518
Page 5 of 10
"A"
Engine Clutch
Housing
Carpenters Square Or Straight Edge
Carpenters Square Or Straight Edge
Hold Square In Horizontal Position And
Frimly Against The Faces Of The Flanges
Adjust Engine On Foundation And Gear Drive
On Discharge Base To Make Distances
"A" And "B" The Same Within One Eighth
Of An Inch
Top View
"B"
"C"
Carpenters Square Or Straight Edge
Carpenters Square Or Straight Edge
One Shaft Should Be From One To
Three Drgrees Above The Other
Align Pump Base And Engine On Foundattion
To Make Distances "C" And "D" The Same
Within One Eighth Of An Inch
Pump Discharge Base Page 6 of Side
10 View
"D"
Drive Shaft Alignment
Bill of Materials for Model M20A 3:1 Ratio, Figure #1
1. COVER PLUG S250
2. COVER R120B
3. 4 CAP SCREWS 7/16 NC x 1-1/4"
4. G109-4 FAN GASKET HORIZONTAL, Buna .032
5. FAN SHROUD M2021C
6. LOWER FINGER GUARD (67" long X 2-1/2" tall X Aqua Mesh)
7. HEAT EXCHANGER M2021B
8. RADIAL BEARING CARRIER M2002B
9. SHIMS G102 (Drawn .030")
10. HORIZONTAL HEAT EXCHANGER R121-L
11. SPACER RING R1621A
12. HORIZONTAL FAN GUARD - R120A
13. 4 CAP SCREWS 7/16 NC x 3-1/2
14. HORIZONTAL FAN R123B
15. CAP SCREWS 5/8 NC x 2-1/2 (8)
16. GASKETS G147A (2)
17. HORIZONTAL BEARING CARRIER M1651
18. OIL SEAL PLATE R155C
19. CAP SCREWS 7/16 NC x 2-1/4 (6)
20. INBOARD BEARING H917810/H917840
21. OUTBOARD BEARING 742/749
22. FAN DRIVE HUB M2023
23. CAP SCREWS 3/8 NC x 3/4 (4)
24. HORIZONTAL SHAFT (RATIO)
M2033 - 3:1 (AN16/W16)
25. OIL SEAL #417349 & #334 O-RING
26. LOCK NUT AN16
27. LOCK WASHER W16
28. INNER RACE R345
29. NON-REVERSE SPRAG ELEMENT - X133403
30. OUTER RACE R346
31. CAP SCREW 7/16 NC x 4 (8)
32. VERTICAL FAN M2024
33. CAP SCREW 5/8 NC x 4-1/4" (4)
34. CLUTCH M2019B (BORE-BX)
35. DRIVE BLOCK M2018
36. VERTICAL SHAFT V2030
37. VERTICAL OVERGEAR SPACER
37a. 6-1/2" O.D. X 4.010" I.D. X 1.015" LONG (3:1 Figure #1)
37b. N/A (3:1 Figure #1)
38. DRIVE BLOCK KEY 1 x 5/8 x 3-1/2
39. RADIAL BEARING 48684/48620
Page 7 of 10
Bill of Materials for Model M20A 3:1 Ratio, Figure #1
40. GEAR SET 3:1 Ratio (M3253L18/M3218R53)
41. GEAR BOLTS 5/8 NF x 1-3/4 (12)
42. GEAR HUB M1663
43. GEAR HUB KEY 3/4 x 1/2 x 4
46. PINION KEY 1/2" x 3/8" x 2-3/4"
47. OIL FLOW SIGHT GLASS B5604
48. GASKET G306
49. OIL OVERFLOW TUBE 5/8 x 1/4
50. OIL CAP S200
51. SHIMS G2000 (Drawn .000")
52. INSPECTION COVER R306A
53. CAP SCREWS 3/8 NC x 3/4 (6)
54. OIL LEVEL CASTING R61
55. SIGHT GLASS R64
56. SHCS SCREWS 5/16 NC x 3/4 (2)
57. OIL SIGHT GASKET G53
58. THRUST BEARING CARRIER M2013
59. CAP SCREWS 7/16 NC x 1-1/4 (6)
60. STAND PIPE M495B
61. VERTICAL OIL PUMP GEAR M2096A
62. S-9B-1.062" SPACER 1.062" LONG, (4.625" O.D. X 3.820" +/-.002" I.D.)
63. THRUST BEARING 90744/90381
64. VERTICAL OIL PUMP GEAR KEY 3/8 x 1/4 x 1/2
65. CAP SCREWS 3/8 NC x 1-1/4 (3)
66. OIL PUMP DRIVE KEY 1/8" X 1/8" X 1" LONG
67. EXTERNAL SNAP RING 5100-.625" FOR 5/8" SHAFT (1)
68. OIL PUMP DRIVE GEAR M2096B
70. OIL PUMP D62
71. MAIN CASE M2000
72. SHIMS G52 (Drawn .028")
73. CAP SCREWS 5/8 NC x 3 (8)
76. S-9-0.515" VERTICAL UNDERGEAR SPACER 5" O.D. X 4.010" I.D. X .515" LONG
77. OIL DRAIN PLUG 1/2" NPT
78. R343 SLINGER
85. M4011C LIFTING BUTTONS (2)
86. GRADE 5 CAP SCREWS WITH LOCK WASHERS
3/4-10 X 2-1/2" LONG (2)
90. OIL MANIFOLD SYSTEM, OIL LINES AND FITTINGS
Page 8 of 10
Model M20A 3:1 Ratio Fig.1 Rotation
31
32 5
33
6
34 7 10 11
73
47 8 13
85
38
86 12
35
51 49 17 16 18
41 39 14
37A 40 19
53
43 23
20 21 22 24
50
36
42
76 46 28 25
52
48 67 26 27
68 15 30
56 90 61 64
29
62 78
55 60 65 66
58
57 9
54 70
63
77 71
72 59
DERAN GEAR, INC. – LUBBOCK, TEXAS
Page 9 of 10
Dimension Sheet - Model M20A - Vertical Hollow Shaft
0-3/4" x .390" KW
3-15/16"
+0.000"
2.937" -0.001"
12-3/8"
31-15/16"
24-1/2"
2"
1"
25"
4) 11/16" Holes
+0.004"
13.501" -0.000"
14-3/4" HCD
18-1/4" HCD
1" = 12" Scale
20"
DERAN GEAR, INC. -- LUBBOCK, TEXAS
Page 10 of 10
