# Radiator Hose Clamp Replacement in Upland > Coolant weeping where the big hose meets the radiator? Route 66 Auto Repair in Upland replaces tired hose clamps with the right type and checks the hose ends. Source: https://route66autorepairshop.com/cooling-heating-ac-services/radiator-hose-clamp-replacement Updated: 2026-09-17 Business: Route 66 Auto Repair, 1775 W Foothill Blvd, Upland, CA 91786, (909) 608-7699 Hours: Monday to Friday 8 AM–5 PM, Saturday 8 AM–2 PM, Sunday closed **TLDR:** A weep at the end of a radiator hose is often the **clamp**, not the hose. We match the **clamp type** to the design and check the neck underneath. Radiator hose clamps hold the large upper and lower hoses onto the radiator and engine necks. When a clamp loses tension or rusts, coolant weeps at the connection even though the hose is fine. Route 66 Auto Repair in Upland replaces the clamps with the type your vehicle was built with, inspects the hose ends and necks, and writes down whether the hose itself should go too. ## Which clamp types are used on radiator hoses? - Spring clamps, the wire or band style that expands and contracts with the hose - Worm-gear clamps with a screw, common on older and aftermarket installs - Constant-tension clamps, a worm-gear style with built-in spring washers - Single-use crimp or ear clamps used at the factory on some models - Quick-connect retainers on plastic radiator necks ## Why does the clamp type matter? Rubber hoses shrink when cold and swell when hot. A spring clamp follows that movement, so it keeps even pressure through the day. A plain worm-gear clamp does not. It can feel tight on a cold morning and still let coolant seep on a hot afternoon on the 210, or it can be cranked so hard that it cuts into the hose. Plastic radiator necks add another wrinkle: too much clamp force can crack them. We use the clamp style your radiator was designed for. If the hose is swollen, soft or cracked at the end, we quote [radiator hose replacement](https://route66autorepairshop.com/cooling-heating-ac-services/radiator-hose-replacement) instead of new clamps on an old hose. ## Our clamp replacement process 1. **Confirm the source:** A pressure test shows whether the weep is at the clamp band, the hose end or the neck. 2. **Release and inspect:** The clamp is removed, and the hose end and neck are checked for cuts, corrosion or cracks. 3. **Seat and clamp:** The hose is pushed fully onto the bead, and the new clamp is placed behind the bead at the correct angle. 4. **Heat cycle check:** The engine is run to temperature and back while we watch the joint for any seep. ## What's included in hose clamp replacement - Pressure test at the suspect connection - Inspection of hose ends and radiator or engine necks - New clamps of the correct type and size - Coolant top-off as needed - Recheck after a full heat cycle ## Can a loose clamp wait? **Need now:** - Coolant dripping or spraying at the connection - A clamp that is broken or has slipped off the bead - A cracked plastic neck under the clamp **Need later:** - Rust on a clamp with a dry joint - Old worm-gear clamps you want upgraded at your next service ## How pricing and timing work Clamps are a small part. Access drives the labor: the upper hose is usually easy, while the lower hose may require removing an underbody shield. If the coolant has to be partly drained, that shows as a separate line. Your written estimate lists each item before we start. Clamp jobs are usually quick and often same-day when the board allows. ## After the repair Look at the joint after your first few drives. A dry, clean connection is what you want. Hoses take a slight set after a new clamp, and a spring clamp keeps up with that. If you see a new crust or a damp line, call [(909) 608-7699](tel:+19096087699) and we will look again. The smaller hoses elsewhere under the hood are covered on our [coolant system hose clamp repair](https://route66autorepairshop.com/cooling-heating-ac-services/coolant-system-hose-clamp-repair) page. ## Frequently asked questions ### Can I just tighten the clamp that is there? On a worm-gear clamp you can sometimes gain a little, but overtightening cuts the hose or cracks a plastic neck. A spring clamp that has lost tension cannot be tightened at all and needs replacing. ### Should clamps be replaced with every hose? Yes, in our practice. A clamp that has spent years at heat has lost some of its grip, and it costs little compared with the hose job itself. ### Why is the joint wet only when the engine is hot? The hose and neck expand at different rates. A weak clamp can hold when cold and leak once everything grows with heat. --- Call (909) 608-7699 or visit https://route66autorepairshop.com/contact for a written estimate.