JLG TF6-42 Service Manual - Manuale (Pagina 654)

T12000 ID 04/99 2-2
2.2.2 Oil Seals, Gaskets, Etc.
Replacement of spring load oil seals, “O”-rings, metal sealing rings, gaskets, and snap rings is more economical
when unit is disassembled than premature overhaul to replace these parts at a future time.
Further loss of lubricant through a worn seal may result in failure of other more expensive parts of the
assembly. Sealing members should be handled carefully, particularly when being installed. Cutting, scratching,
or curling under of lip of seal seriously impairs its efficiency. When assembling new metal type sealing rings,
these should be lubricated with coat of chassis grease to stabilize rings in their grooves for ease of assembly
of mating members. Lubricate all “O”-rings and seals with recommended type Automatic Transmission Fluid
before assembly.
2.2.3 Gears and Shafts
If magna-flux process is available, use process to check parts. Examine teeth on all gears carefully for wear,
pitting, chipping, nicks, cracks, or scores. If gear teeth show spots where case hardening is worn through or
cracked, replace with new gear. Small nicks may be removed with suitable hone. Inspect shafts and quills to
make certain they are not sprung, bent, or splines twisted, and that shafts are true.
2.2.4 Housing, Covers, etc.
Inspect housings, covers and bearing caps to ensure that they are thoroughly clean and that mating surfaces,
bearing bores, etc…, are free from nicks or burrs. Check all parts carefully for evidence of cracks or conditions
which would cause subsequent oil leaks or failures.
Cleaning, inspection and legend symbols
Smontaggio di sottogruppi
Montaggio di sottogruppi
Smontaggio di particollari ingombranti
Montaggio di particollari ingombranti
Attenzione, indicazione importante
Controllare regolare p.e. coppie, misure, pressione etc.
T = Attrezzature speciali P = Pagina
Rispettare direzione di montaggio
Controllare esaminare controllo visuale
Eventualimente riutilizzable (sostituire se necessario)
Sostituire con ogni montaggio
Togliere - mettere la sicura
Mettere la sicura, incollare (mastice liquido)
Evitare danni ai materiali, danni ai pezzi
Marchiari prima dello smontaggio (per il montaggio)
Carricare riempire (olio - lubrificante)
Scarricare olio, lubrificante
Tendere
Insere pressione nel circuito idraulico
Pulire
Disassembly of assembly groups
Reassemble to from assembly group
Remove obstruction parts
Reinstall - remount parts which had obstructed disassembly
Attention! important notice
Check - adjust e.g. torque, dimensions, pressures etc.
T = Special tool P = Page
Note direction of installation
Visual inspection
Possibly still serviceable, renew if necessary
Renew at each reassembly
Unlock - lock e.g. split pin, locking plate, etc.
Lock - adhere (liquid sealant)
Guard against material damage, damage to parts
Mark before disassembly, observe marks when reasembl.
Filling - topping up - refilling e.g. oil, cooling water, etc.
Drain off oil, lubricant
Tighten - clamp ; tightening a clamping device
Apply pressure into hydraulic circuit
To clean
2.3 LEGEND SYMBOLS