Inspection; Rebuild - Toro Dingo TX 413 Service Manual

HYDRAULIC LIFT ASSEMBLY

Inspection

INSPECT ROD: There should be no scratches or
pits deep enough to catch the fingernail. Pits that go
to the base metal are unacceptable. Scratches that
catch the fingernail but are not to the base metal,
less than 0.5 inch long (1.27cm) and primarily in the
circumferential direction are acceptable provided they
cannot cut the rod seal. Chrome should be present
over the entire surface of the rod and the lack thereof
is unaccept-able. In the event that an unacceptable
condition occurs, the cylinder should be replaced.
INSPECT HEAD: Visually inspect the inside bore for
scratches or polishing. Deep scratches are unaccept-
able. Polishing indicates uneven loading and when
this occurs, the bore should be checked for out-
of-roundness. If out-of-roundness exceeds 0.007"
(.18mm), this is unacceptable. Check the condition
of the dynamic seals, looking particularly for metallic
particles em-bedded in the piston seal surface.
Remove the seals. Damage to the seal grooves,
particularly on the sealing surfaces, is unacceptable.
In the event that an unacceptable condition occurs,
the cylinder should be replaced.
7-42
INSPECT TUBE ASSEMBLY: Visually inspect the
inside bore for scratches and pits. There should be no
scratches or pits deep enough to catch the fingernail.
Scratches that catch the fingernail but are less the 0.5
inch long (1.27cm) and primarily in the circumferential
direction are acceptable provided they cannot cut
the piston seal. In the event that an unacceptable
condition occurs, the cylinder should be replaced (Fig.
336).
C
D
A. Tube
B. Retaining Ring
C. Piston

Rebuild

Thoroughly rinse the inside of the tube with a clean
solvent. Remove all seals and o-ring and rinse and
clean all internal components of any foreign material
with a lint-free rag.
Rev. 000
A
B
E
Figure 336 DSC-1345
D. Head
E. Ram
TX 413 Service Manual