Search

| Products | Distributor-Locator | Contact | About Heco | Applications | Help | Distributor-Extranet | Feedback |

Home > FAQ Answer
Return to FAQ List
Question:
FAQ: Disassembly-Instructions - Disassembly

Answer:
Disassembly Instructions
Warning: Standard safety practices must be followed during the procedures described herein. Eye protection is mandatory.
Clean exterior of unit prior to attempting disassembly. Remove unit to clean work area.
1) Clamp mounting flange in vice shaft down taking care not to damage output shaft surface.
2) Remove pipe plug (13 or 23) from case and drain oil from unit. Retain oil for analysis.
3) Remove remaining two pipe plugs in housing (12) and motor adapter (22).
4) Remove hydraulic motor and examine for failures. Our experience indicates that motor failure is the most common cause of reducer failure.
5) Remove sungear (25)
6) Remove eight bolts (24) from motor adapter (22) (fig. 1) Note: Code 6, 2/4 SAE-C motor adapter, remove nuts from studs (24)
7) Remove motor adapter (22) from internal gear (21).
8) Lift internal gear (21) from housing (12).
9) Remove O-rings (14) from internal gear (21).
10) Remove retaining ring (9) from grove in shaft (7). Note: (9) is a wirelock retaining ring that retains the planet carrier assembly (2) on the output shaft (7). This locking ring must be pried out of the locking ring groove to remove the planet carrier assembly (20). This is typically accomplished by inserting tow long screwdrivers between the planet gears and carefully working the wirelock out of the locking groove. (fig. 2 & 3)
11) Lift planet carrier assembly (20) from shaft (7)
12) Bend tab on lock washer (18) away from lock nut (19).
13) Using a spanner wrench or HECO tool #19150, unscrew lock nut (19) and remove lock washer (18) and keyed washer (17). (fig. 4)
14) Take unit out of vice and turn it over. Remove six cap screws (1) from seal carrier (3). (fig. 7)
15) Remove seal carrier (3) from housing (12).
16) Remove O-ring (6), quad and backup ring or high pressure seal (4 & 5) and shaft seal (2) from seal carrier (3) and discard. (fig. 8)
17) Support housing (12) with output shaft down and press shaft (7) out of housing from input end of shaft. Note: Shaft may come out with bearing cone (16) attached. Remove bearing cone carefully to avoid damage to shaft.
18) Carefully drive bearing cups (11 & 15) out of housing (12).
19) Remove two retaining rings (3) from ends of planet pins (29). (fig. 9)
20) Support planet carrier (20) spline side down and drive planet pins (29) out of planet carrier (20). (fig. 9 & 5)
21) Remove planet gears (28) and thrust washers (26) and planet carrier. (fig. 9)
22) Remove planet bearings (27) from planet gears (28).
23) Examine brass thrust plug (8) in end of shaft (7). (fig. 2) If wear is apparent, remove by inserting a 1/4" self taping screw and jacking the plug out of the shaft.
24) Clean and examine all parts for wear or failure.

© 2024 HECO Gear. All rights reserved. 916.372.5411 |  Terms and Conditions  Warranty | Sitemap
| powered by IndustrialDNA | WebSupergoo software
w
e use the ABCpdf ASP PDF component for HTML to PDF conversion...

Custom Search