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NOTE

Starting mid-year 1996, Braden changed the steel

brake  separator  discs  from  a  splined  tooth  design  to  a
lobed design.  This required a change to the motor sup-
port and brake cylinder and the addition of a spring spac-
er.  A hoist  with  the  lobed  discs  can  be  identified  by  a
machined  groove  on  the  outside  diameter  of  the  motor
support. When replacing steel brake discs, the motor sup-
port  or  brake  cylinder,  care  must  be  taken  to  properly
identify the correct parts. Splined discs, and their mating
motor support and brake cylinder will remain available as
spare parts.

New  lobed  steel  brake  separator  plates  and  motor  sup-
port. Note  groove on outside diameter of motor support.

Although most photos in this section show splined discs,
all  procedures  are  the  same  except  where  specifically
noted.

1. After  removing  the  motor  support  and  brake  clutch

assembly,  continue  brake  cylinder  disassembly  by
removing  the  spacers,  friction  brake  discs  and  steel
brake discs.

2. Remove the piston back-up ring and pressure plate.

3. Remove the brake springs.

CLEAN AND INSPECT

1.  Thoroughly  clean  and  inspect  all  parts  at  this  time.

Check  brake  piston  sealing  surfaces  on  brake  cylin-
der and motor support for scoring or wear.  Be sure
brake release port is free of contamination.

2.  Check oil seal and bearing surfaces on brake cylinder

for damage or wear.

18

MOTOR SUPPORT-BRAKE CYLINDER SERVICE

DISASSEMBLY

Содержание BRADEN Gearmatic BG6A

Страница 1: ...BG6A BG6B HYDRAULIC PLANETARY HOIST PACRWINCH DIVISION P O BOX 547 BROKEN ARROW OK U S A 74013 PHONE 918 251 8511 FAX 918 259 1575 www paccarwinch com LIT2286 R2 5 2010 Printed in U S A Copyright 201...

Страница 2: ......

Страница 3: ...E CLUTCH SERVICE 22 23 PLANET CARRIER SERVICE 24 25 HOIST ASSEMBLY 26 29 REVERSING DIRECTION OF DRUM ROTATION 30 FASTENER TORQUE CHART 32 METRIC CONVERSION TABLE 33 Safety informational callout s used...

Страница 4: ...259 1575 Provide the complete hoist model number and serial number when making inquiries The model and serial num bers are stamped into the data plate attached to the base to the left of the hydraulic...

Страница 5: ...t the beginning of each work shift Defects must be cor rected before operating hoist 8 Keep equipment in good operating condition Perform scheduled servicing and adjustments listed in the Preventive M...

Страница 6: ...7 88 LOWER PORT SAE 16 ORB 1 5 16 12 ORB 1 57 4 12 A HOIST PORT SAE 16 ORB 1 5 16 12 THD MOTOR A B 020 20 06 3 81 029 20 56 4 06 039 21 01 4 32 6 25 12 50 1 75 LOWERING PORT SAE 10 ORB 7 8 14 THD 62 1...

Страница 7: ...4 THD 62 15 28 8 00 63 3 75 15 00 6 63 87 MOTOR A B 020 20 58 4 07 029 21 08 4 32 039 21 08 4 32 A B 656 4 Holes 4 04 15 91 3 78 3 75 6 63 14 56 15 00 63 15 28 88 1 22 10 26 8 00 67 7 28 7 84 HOIST PO...

Страница 8: ...tem The dynamic brake system has two operating compo nents 1 Brake valve assembly 2 Hydraulic motor The brake valve is basically a counterbalance valve with improved metering It contains a check valve...

Страница 9: ...l sufficient pilot pressure is present to open the brake valve The friction brake with in the hoist will completely release at a pressure lower than that required to open the brake valve The extent to...

Страница 10: ...in temperature Maximum cold weather start up viscosity should not exceed 5 000 SUS with a pour point at least 20o F 7oC lower than the minimum ambient temperature Under continuous operating conditions...

Страница 11: ...d an oil from a different temperature range would be more appropriate Oil viscosity with regard to ambient temperature is critical to reliable brake operation Make certain that the gear oil viscosity...

Страница 12: ...ompounds EP 220 PREVAILING AMBIENT TEMPERATURE oF 40 30 20 10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 oF AGMA 5 EP ISO VG 220 AGMA 4 EP ISO VG 150 SYNTHETIC OR EQUIVALENT oC 40 30 20 10 0 10 20 3...

Страница 13: ...Install a pressure gauge in the haul in port and apply a stall pull on the hoist If pressure is low increase relief valve setting until recommended pressure is obtained NOTE If pressure does not incr...

Страница 14: ...m up procedure in Preventive Maintenance section Same remedy for F1 D Brake will not hold when control valve is returned to neutral after lifting a load 1 Excessive system back pressure acting on the...

Страница 15: ...rator training as required Remove oil level plug and check oil level Fill to proper level See Hoist Installation section for control valve specifica tions G The hoist runs hot 1 Same as A 5 2 Be certa...

Страница 16: ...7 OIL SEAL 1 28 BALL BEARING 2 29 SNAP RING 1 31 O RING 1 32 OIL SEAL 1 33 LOCKWASHER 6 34 CAPSCREW 6 ITEM DESCRIPTION QTY 49 16166 8 PLUG 1 51 DRIVE SCREW 4 53 LOCKWASHER 6 54 CAPSCREW 6 55 CABLE WED...

Страница 17: ...AP RING 1 372 SNAP RING 1 400 OUTPUT PLANET CARRIER ASY 1 406 OUTPUT PLANET CARRIER 1 407 OUTPUT PLANET GEAR 3 408 OUTPUT PLANET GEAR SHAFT 3 409 ROLLER BEARING 6 410 BEARING SPACER 3 411 THRUST BEARI...

Страница 18: ...assembling hoist HOIST DISASSEMBLY 1 Disconnect all hoses and fittings at the hoist 2 Stand the hoist on the bearing support plate Remove the brake release tube assembly 59 between the brake valve blo...

Страница 19: ...drum for nicks spalling or excessive wear Replace the drum if wear is greater than 0 015 in 0 4 mm when compared to unworn area of teeth 2 Install new bearings in the drum if replacement is nec essary...

Страница 20: ...eparator plates and motor sup port Note groove on outside diameter of motor support Although most photos in this section show splined discs all procedures are the same except where specifically noted...

Страница 21: ...eplace steel disc if splines are worn to a point disc is distorted or heat discolored 5 Check brake spring free length minimum free length is 15 16 in 23 8 mm Check springs for any sign of cracking or...

Страница 22: ...must rise above uppermost flange 080 in 2 mm maximum and 000 in 00 mm If the gap exceeds the maximum limit there are too many brake discs in stack up or the discs are distorted If the gap is less tha...

Страница 23: ...0 psi 0 13 800 kPa gauge and shut off valve to this fitting Apply 1000 psi 6 900 kPa to the brake Close shut off valve and let stand for five 5 minutes If there is any loss of pressure in five 5 minut...

Страница 24: ...assembly If disassembly is necessary remove the bushing according to the procedure covered in Step No three 3 All brake clutch assembly parts should be thoroughly cleaned and inspected before assem bl...

Страница 25: ...t it through the sprag clutch If the inner race will not go through the bushings the bushings have probably been damaged and should be replaced 6 Turn the assembly over with the snap ring down Install...

Страница 26: ...terial displacement or abnormal wear the bearing should be replaced Likewise the cage should be inspected for unusual wear or deformation particularly the cage bars If there is any damage that will im...

Страница 27: ...ce Always use NEW roll pins When properly posi tioned 50 of the roll pin will engage the planet gear shaft and 50 will remain in the planet carrier 4 Note that the roll pin is slightly recessed in the...

Страница 28: ...ith petroleum jelly or gear oil and install in base and drum 4 Tighten the bearing support capscrews to the recom mended torque 5 Stand hoist on bearing support end Install the output sun gear and thr...

Страница 29: ...quired Use sealant on the outside surface of the oil seal Install with spring side of the seal toward bearing using a flat plate to avoid distortion Install a new O ring in the groove on the O D of th...

Страница 30: ...i to the brake release port The brake discs will move freely with the brake released 14 Install the hoses and fittings to the brake cylinder release port 15 Install a new O ring on the motor pilot the...

Страница 31: ...brake and close the shut off valve Let the brake stand for five 5 minutes If there is any loss of pressure the brake pack should be disassembled for inspection of the sealing surfaces and the brake p...

Страница 32: ...y smooth the assembly should be replaced 30 REVERSING DIRECTION OF DRUM ROTATION Motor Case Drain Brake Release Circuit Brake Release Circuit Hoisting Port Motor Case Drain Motor Brake Valve M Lowerin...

Страница 33: ...he original capscrews and tighten to recommended torque 10 Connect the motor case drain hose to the motor case drain port 11 If your winch had the brake release hose connected directly to the motor th...

Страница 34: ...void using thread lubricants as the applied torque may vary by 10 40 depending upon product used Dry Lubed Dry Lubed Dry Lubed Dry Lubed Torque LB FT Grade 5 Grade 8 1 4 20 28 5 16 3 8 18 24 16 24 7 1...

Страница 35: ...Hg 60o F pounds sq in PSI X 6 895 kilopascals kPa kilopascals kPa X 0 145 pounds sq in PSI pounds sq in PSI X 0 0703 kilograms sq cm kg cm2 kilograms sq cm kg cm2 X 14 22 pounds sq in PSI pounds sq i...

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