TOYO PUMPS EUROPE
Edition 03.11.2009
- 9 -
The disassembling of the pump is now finished. Take care to clean all parts before
reassembling them.
ASSEMBLING PROCEDURES
To reassemble the pump, it is sufficient to follow the disassembling procedures in opposite
direction. Please find here below the specific assembling instructions.
1. Bearings
a) The bearings may be mounted by pression exerted on the internal ring of the bearing
by the instrumentality of a jig. Do not forget to grease the shaft and the internal ring of
the bearing before mounting.
b) Nevertheless, it is recommended to heat the bearings before mounting. In this case,
heat up the bearings by induction or in oil at maximum 120°C and slide them on the
shaft. Afterwards, let the bearings cool down by air.
c) Use only grease for bearing lubrication or lithium grease.
2. Seals in under cover
a) Verify the condition of the shaft sleeves A and B (44)(51) and the oil seal housing A
and B (58)(61) before beginning the assembly of the pump. Replace the shaft sleeves
if the surface is used, grooved, or even showing the base metal. Their surface needs to
be rigorously smooth to assure the tightness. All seals into the under cover have to be
replaced.
b) Attention, the seals have to be mounted so that the opening of the seal is showing the
bottom of the oil seal housing (impeller side).
The oil seals will be completely filled up with water-resistant grease before mounting
into the oil seal housing.
Put the oil and Rareflon seals into the oil seal housing (58)-(61), and this in the same
order as shown on the exploded view. For this, use a hammer and a jig (schema 1).
Never use a hydraulic system. Proceed with care by exercising the most uniform
pressure as possible. A deformed seal looses its efficiency. No trace of paint at all may
be found on the oil seal.
